i have a couple of questions about the naturally aspirated mkIV's. i want to know if they are even remotely as fun to drive as the tt's. right now i drive a 3rd gen rx-7, not mine, but its what i drive when i need a car. and that car has power. would the na be a dog compared to this? and also does the na supra have the same engine as the tt less the turbos. either way, how easy is it to turbo the na, and how will it compare to a tt from the factory?