I'm thinking about installing the Fast Intentions Syst. Probably with the 12" resonators. Anybody have any thoughts on the benefits of wrapping the pipes with 2" high temp. header wrap? Especially directly under the cabin area. I've noticed the stock syst. has a metal shield around the pipes for the purpose of heat insulation. Also, would there be any difference in the noise level inside the cabin if the resonators were deleted, and only the silencers out back with stock cats.