Here is a subject near and dear to my heart (or should I say wallet). I just went through a complete engine / tranny rebuild on my 92 where we completely gutted the exhaust system that was installed by a local speed shop. Lets just say their parts and workmanship sucked..I could go on for days about that subject. I now have Hooker Full Length, custom Y pipe, aftermarket CAT (keep epa happy) and Flow Master Muffler with 3" pipe. Works great, no leaks and does not contact frame. The headers that were installed that had problems were: Flow Tech Full Length - tubes didn't match ports, leaked, hit frame. Headman Full Length - would have had to notch frame or bend headers.