as title says, I'm basically wondering if the block deck height is different from 95 gsr to 91 ls? I'm wondering because im looking at buying a header but i was curious if I'm going to have fitment issues. Im building a ls vtec with a 91 ls block with a 95 gsr head.

 

If it was a b16a header you might have fitment issues but not with the B18 engines.

 

thanks for your info/response, i already ordered a gsr header before i asked so i was banking on the fact b18's header were interchangable. anyhow, thanks again.