Engine Build: The 01 MC SS Sleeper LS4
id ditch that exhaust, get a hogan downpipe some 2.5 or 3 inch piping and a resonator no mufflers. ls1/2/6 intake will work. they require a little fab and a tune. you would have to ditch dod, relocate opsu, and map. theres some more work involved, but the performance gain is well worth it. go on to ls1tech.com in the ls4 section theres plenty of threads on it, that and im sure the guys over there would like to see your swap.















