The deisel shop that moved out of here a few years ago, used to have really good results, putting headers on IDI's. They put headers, and duals, on anyting that didn't have a turbo. The guy that runs a shop here now, was the shop manager out there. He swears he can get more power out of one, with headers, than a turbo. The big trick seems to be putting in an H-pipe.
Plus, they sound awesome with duals, and 48" glasspacks.
Plus, they sound awesome with duals, and 48" glasspacks.