ZR1 all the way. Smoking fast out of the box and nothing is more cheaply modded than a chevy. 
What Steve said. The only thing that disturbs me is the poor production tolerances. Shouldn't be that way on such an expensive car. The Viper would be fun, provided it didn't break down on the way to the track. For as rare as a Hennesy Viper is, it's funny how many you could find broken down on Houston freeways. I don't see the ACR being any more reliable. I still like the R34 Skylines better than the new GT-R.
edit:
You should have made this an option


220hp suzuki hyabusa engine, 0-60 in 2.5, 0-100 in 4.9
and it's street legal
