I have pypes on my car. I think for the money they make a pretty good settup. A/T, 400, mild rebuild and cammed out. I have the 'violator' mufflers with 2.5 stainless X cross over pipe, dual exhaust. RA III ex. manifold. At first it was too loud for my liking, and honestly, it still is a bit loud but I have gotten used to it. Sounds perfect with the lumpy idle. 55-65 mph it settles in nice and quiet. Up to that point its loud inside but I have very little interior sound insulation. The system is made for the second gen. and the installer had no problems putting it together. My current project is a 400 4 speed and I am planning on using a Pypes system but with a transverse muffler this time around. The pypes people told me that the transverse actually produces a bit more hp than the dual settup. I am looking forward and curious as to how the two will compare.