Those Pypes violators are just a glorified glass pack. They have stainless steel wool around a perforated tube, followed by glass packing material around that. They are just shaped like a normal muffler, with the glass pack tube going through at an angle. I was just looking at a set right out of the box on Saturday, a friend bought them for his Chevelle.
I have to admit though, I was surprised at the quality of that stainless exhaust system. 3/8" thick fully welded collector flanges, all mandrel bent. Excellent quality tig welded x-pipe. He even got the entire system polished, VERY nice.
I have to admit though, I was surprised at the quality of that stainless exhaust system. 3/8" thick fully welded collector flanges, all mandrel bent. Excellent quality tig welded x-pipe. He even got the entire system polished, VERY nice.

