Once again, I drive a Mercedes, not a Crossfire, so I cant say what Chrysler will do. Mercedes honors thier warranty, and extended warranty even though my V-8 is supercharged. The transmission does not need to be beefed, it's the same tranny as a SLK 320, and it can handle the power. The fuel supply does need to be increased in pressure. Kleemann handles all of this, as they have been supercharging Merc engines for years. I will say that Viper owners are VERY surprised by my Mercedes. Corvette owners are baffled also. The only badging I have on my car is a little "kompressor" badge on the back right trunk. One problem I do have is tires. I have WAY too much hp for the Continentals on the car, now looking at Proxies. - Good luck - Dave