1990 dodge d250 cummins

I had stacks on mine. It gets old quick and I mean really quick. Single stack is gay and a legit pair will set you back 400-600 bucks and they are a total pain in the ass to align and then shift out of place over time. Keep it simple and get the 4" turbo back and then take the $$$ your saving and get yourself upgraded intake and exhaust manifolds.