[cobrashoch]

Mr fixit - yours is a very good question about the latest thinking that really can't be answered to easy on this board. The Viper engine was originally concieved as a joint effort between Chrysler and Lamborghini. It's real problem has always been that it's had to be tuned back a bit to make it a little less powerfull so Chrysler could warranty the drivetrain. (read- trannys) The new Vipers reflect new drivetrain changes along with a milder but bigger engine. There are several places that "wake up" a Viper motor to around the 700hp level or even more led by the famous Hennessey twin turbos. Most guys that I have talked to that "play" with Vipers change a chip and do some exaust work, said to be good for about 100hp+. All of that for about 350$ and a blown warranty!
There's MUCH more here to talk over as to the hows and whys this is so, but unfortunately this a poor place to have that sort of rap. Besides, D.V. has more experience than I on this one. Maybe a Viper forum can be better served.
cobrashock