Like the title says I am looking for a 4" or 5" turbi back exhuast preferably 5" with 5" down pipe for a 99 sd reg cab. If anyone has something laying around.
I don't believe they make a 4in downpipe. One, the outlet of the turbo isn't that big so that is the bottle neck so its pointless, and I don't see enough clearance there for it. One a side note, I just bought a diamond eye system and love it! 430 shipping for 4in downpipe and 5in the rest of the way.