If i get the 3" down pip is that going to bolt where the old one did without getting different headers and stuff. Also what is going to be the benifit of getting the bigger down pipe without doing the rest of the exhaust?
zzp makes the best bolt in downpipe for quality, fit, and price. This would bolt right up in place of your current downpipe with no other mods. The biggest benefit is increased flow throughout this area of your exhaust.
98 GTP Coupe- 180* T-stat, GMPP Front Sway Bar, Dual Aeroforce Interceptor's, TDC FWI, TDC Taylor 10.4's, ZZP SS Plog, ZZP 3" SS catted DP, ZZP MPS W/3.4, AL104's gapped @.055, 3800Perf. PCM