For those of u that are worried about muffler heat, have u thot about wrapping them ? I built my own 3 1/2" low restriction mufflers and pipes dumped in front of the rear axle, had some old fiberglass wrap off of the used headers I bought. I wrapped the entire exhaust from the flanges back , no noticeable heat . I do have new stock carpeting tho.
I have often thot of buying some more 3 1/2" exh. pipe and splitting it to make nascar type exits, and turning them out like the AR cars. Afraid it would be putting the already loud exh. notes too much in ur face. The noise isn`t that bad inside the car, but is really loud to passing cars , or on a bridge.