Im swapping in a lsvtec into a 90 si hatch, What year b-series header do i use , gsr, ls, b16 , 91,92,93,95-00. Any help would be appreciated thanx.

 

dont matter as long as its a b series, but the exhaust flange is different

 

thanx, so there is no difference in downpipe length?

 

yes there is a difference gsr's are short depending on year and just because flange is the same doesnt mean a thing. The actual port inlet/size is usually different on the b series vtec vs the ls headers for good reason

 

So which would you recommend that would work for my 90 si? Thanx