finally got the money to install my turbo and get a cowl intake, my guages/a pillar, and a downpipe from banks, only issue is exhaust. i want to run 4" exhaust but i dont know where to get it. i would have it made but my exaust guy cant bend 4" pipe. anyone know where to get 4" exaust for these trucks? i imagine getting 4" exhaust for a obs powerstroke would possibly work with some modifying.. i think the downpipe goes down on the opposite side of the engine.