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i have 3" primespeed downpipes, and 2.5" greddy SP exhaust. there is no shop in austin with a mandrel bender. here are the options i am considering: 1 - 2.5" TP with a 3" flange at the front to match the DP. 2 - 3" TP with a 3" flange on the exhaust portion 3 - 3" TP bolted straight up to my exhaust. would this cause bad turbulence? also, who makes them? i know DSP and russel siebert do. any others? thanks, Jefe
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