The Audi R8 is talking about going to TT V6 instead of V8 for the base. I think an small displacement, 500 + hp, TT V8 would be just fine to start with. Plus, look at the torque output, 627 lb/ft is really going to get you moving. A Mercedes E63S is ~4,500 lbs (w/ AWD) and that car hauls the mail for sure. Imagine in a current C7 at 3,500 lbs....
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