[JoolsPlus3]

Oh, I have so much sympathy for you! That Peg base is totally incompatible with the center of the RX 300, in my humble experience. The cheapest solution is to install it outboard (window seat) with the LATCH, and yes, that absolutely IS safe (center is safEST, but a properly installed rearfacing seat in any back seat is also incredibly safe...good thing for those of us with two or more kids!).
If you just want to start over with a new seat, then a seat with a built in seatbelt lockoff in the base is what you want to get (sorry, I don't know which ones work best, but one of them should certainly work).
Chicco Key Fit
Graco SafeSeat 1
Combi Centre (any model, there are several, DX and ST, at least)
Combi Connection (not exactly a lockoff, but a backwards belt path that
works great with shoulderbelts)
Britax Companion

(I've owned all but the safeseat...which I'm getting today for my 8 month old, lol, and have loved the Key Fit the best, it's SO easy to install and use!)

Good luck,
Julie
CPST and mom to three in seats

	Britax car seats Britax International has been producing reliable child safety products for over 30 years. Not only does Britax have decades of experience creating car seats and other children's safety equipment, Britax has a long standing reputation as an industry leader and innovator. Britax International is headquartered in the United Kingdom, but Britax car seats are designed and manufactured at facilities in Germany, Austria, and the United States. In the summer of 2002, Britax strengthened their commitment to creating the safest car seats with the opening of a brand new, state-of-the-art crash testing facility in North Carolina. Britax car seats have a reputation around the world for being some of the safest, most reliable, and best designed child safety seats ever made. Ready to buy a Britax seat? Please support our sponsor!

	Britax Companion - Click for more info It was not a surprise when Britax - a company known for their commitment to safety - came out with an infant seat that raises the bar in overall child safety with side impact protection. The Britax Companion infant seat was considered a safety revolution when it came out, and has only gotten better since. Needless to say, the design of the rear-facing Companion Infant Seat is pretty flawless. Plus, the in-car base makes it really easy to transport your child from your car to your house without waking them up.

	Chicco car seats Chicco makes car seats that are tested for safety and comfort. Italian-made Chicco is sold the world over to discerning parents everywhere, mainly because they are thorough with their design but each children’s product they sell is simple to use and stylish. All of Chicco’s car seats have certain universal elements: they’re lightweight, they are easy to install or use, each have the extra perks like canopies or liquid levelers for added convenience. Take a look and you’ll find an up-and-coming competitor for some of the best car seats on the market. Ready to buy a Chicco car seat? Please support our sponsor!

	Chicco Key Fit - Click for more info The new and improved Chicco KeyFit infant car seat (dubbed the Chicco KeyFit 30 thanks to its enhanced-to-30 lbs harness) has the same great features of the original KeyFit, but with a higher harness weight capacity. It is recommended that a child stay in a rear facing car seat for at least the first year of his or her life, and this infant seat from Chicco assures that your child will. Ready to buy a Chicco Key Fit? Please support our sponsor!

	Combi car seats Established in 1954, Combi quickly became Japan's premier supplier of Juvenile products. Their design philosophy is actually behind their name - COMBI is a contraction of the word "combination," which denotes "combination of parent and child." Combi has been supplying the US with innovative light weight strollers for 15 years. In 2003 they entered the US market with car seats built with the same design philosophy that has guided their company for years. Ready to buy a Combi car seat? Please support our sponsor!

	Graco car seats Graco is one of the world's best known and most trusted juvenile products companies. They started the entire juvenile products industry with an invention called the Graco Swyngomatic. Since then they have invented products that have changed the way that parents travel with their children such as the travel system, which has made it so parents can lock an infant car seat into a stroller easily, without waking their sleeping baby. Their Graco SnugRide Infant Car Seat is pretty much synonymous with the term “infant car seat” because of its safety and design features coupled with its affordability. Today Graco continues designing and developing top-quality products that inspire parents and keeps children safe. Check out the new Infant Safe Seat Step 1 and Toddler Safe Seat Step 2 for proof of Graco’s continued commitment to child safety. Ready to buy a Graco car seat? Please support our sponsor!

	Graco Safe Seat Step 1 - Click for more info The Graco Safe Seat (Step 1)—if you couldn't gather from the name— is intended to be the first of a three-seat process. The Step 1 is for infants in a rear-facing position; the Step 2 is for bigger, older kids in the forward-position; the Step 3 is a belt-positioning booster seat without the safety harness of the previous two.

	Peg Perego car seats Founded by Italian designer Guiseppe Pérego all the way back in 1949, Peg Pérego quickly branched out from traditional prams to strollers, high chairs, car seats, toys and accessories. Internationally renowned for innovative products and a supreme sense of style, Peg Pérego creates some of the most enjoyable and eye-catching transportation and safety options for children all over the world. With factories and offices in Italy, Germany, Canada, and the U.S., Peg Pérego is a truly international entity, blending technology and history to create lines that are reputable and safe. Peg Pérego professes a "dedication to original and innovative products designed for discriminating consumers who demand fashion, individuality, quality and safety in the products they purchase for their babies and young." Ready to buy a Peg Perego car seat? Please support our sponsor!

	LATCH LATCH stands for Lower Anchors and Tethers for CHildren. It is a system mandated by the Federal government in an effort to standardize and simplify the installation of child restraints without using the vehicle's seat belt system. New vehicles and child safety seats manufactured on and after September 1, 2002 will be equipped with the LATCH system. Cars, minivans, and light trucks will be required to have anchor points between the vehicle's seat cushion and the seat back in at least two rear seating positions, and a top tether anchor (with the exception of convertibles). Child safety seats will have a lower set of attachments that fasten to the vehicle anchors. Most forward-facing child safety seats will also have a top strap (tether) that attaches to the top anchor in the vehicle.