Thanks for letting me know that the crossfire was not a limited in '04, but thought there was a base model offered in '04 the ones without the silver colored window trim. I know that the roadster and srt6 came out for '05. The main differences between the 2 are in the engine, tranny, suspension, brakes and the seats. The SRT6 has more horsepower 330 vs. 215 compression ratio srt6 is 9.0:1 and the stock one is a 10.0:1. The brake system went from single piston to a dual piston caliper, all the rotors are vented vs. '04 solid ones in the rear, the engine which is supercharged and has a intercooler. And the suspension has firmer damping and stiffer spring ratios, also the seats are suede, less slipping on hard turns or hard braking vs. the regular leather seats. The steel accented parts went from high gloss to a low gloss finish causing less sun glare, the speedometer goes to 200 mph vs. 160 mph and the segments are different on the speedo. Also the tech has the SRT6 logo on it, seats feel a lot better, more support. Since I had back surgery, I had to use a pillow with the '04 and so far have not had to use one with the SRT6. The esp system was also tweaked allowing you to squawk the tires, where as the '04 did not unless you turned off the traction control. Also they added heated outside mirrors, a cabin filtering system, so that's about it that I know of for now. The two cars are the same in a lot of ways but the SRT6 has the street racing technology which makes it a lot better, but wish I would have gotten the SRT6 first but glad I waited for the prices to come down paid less for the SRT6 than the '04. Well I hope that this info helps you folks out some, this is why I joined, to get more info from other Xfire owners.

Thanks Kevin