Here is the thing, I bought a 10th Ann. Black coupe. And have started to Mod the shit out of it. Whipple, JLT, Bassanni, Tune, SSR GT3's 18x9; 18x9.5's, suspension, cooling, fuel system, tune, and soon trans work. But, this thing is horrificly LOUD and that's not what I want. I want a well behaved street machine that is as quite as, dare I say Ferrari or Lambo's. What do I do and still keep the 650hp range so I can still smoke them? ( I have mid-length headers x-pipe and cat-backs by Bassanni)