i had 2 inch pipe that was crush bent into a thrush turbo muffler, sounded ok but it was a little loud out on the highway, that was fine for my old tired l20 with hitachi carb. now i have another 2 inch crush bent exhaust thats all fucked up hanging down and ugly, it has several bends in it and i know the actual pipe diameter at the bends is 1.25 inches or less!!! i tried the turbo muffler on this setup and it sounded like shit so i ran a cherry bomb glasspack, its worse than before and it really really choked my motor up, i have threatened cutting it all off but im afraid the exhaust shop wont help me out. mine looks like ballsack and sound sliek shit, you may not beleive me but i swear i lost 10+ horsepower especially at high rpms my thrush turbo and glass pack will be available for sale soon if anyone wants em. if i have to go crush bent im going to bump up to the 2.5 diameter pipe, also both times i have requested 2 inch pipe it has been od not id 2 inch so it was 1 7/8 inch id to begine with. i loved the sound of the straight manifold but it was dangerous and potentially harmful to the engine. the only thing i didnt like abotu the open manifold was the roaring sound of exhaust gases, the actual frequency of the note was good but the expulsion of the gases sounded like a huge ass continuous fart.