Viper or Challenger

Definately the Challenger. Make mine a 5.7 with 6 speed, and I can use the rest on modifications. By the time it was tweaked, it could probably hang with the Viper on power, braking, handling, etc.

I would drive the wheels off it.

no offense but you have never driven a viper have you? As someone who gets to drive a new challenger from time to time and a viper a few times it's not even close, the viper wins hands down for go and handling. Now if I had to buy one for myself I think I would go viper because you are starting to see challengers every day but vipers not so much. Not to mention Vipers are just fun to drive! And yes I would DD it just like I do with my swinger right now.