whats up everybody, i am just wondering, whats the difference between a header on a b18a1 and a header on a b18b1, i am just wondering because i have a b18a1 and a buddy of mine is getting rid of his header, and i wantto but it but idont know if it will bolt on or not, he wont let me try it before i buy it type of thing, but any help would be greatly appreciated, thanks in advance

 

if you and him are friends i would tell him to let you bolt it up or stick it up his ***

 

sorry to be replying to this so late

the header will fit both. but the oxygen sensor may be in a poor location.

as far as his aZZ i dont think you should try attatching it.you may end up with a poor performance and bad emmisions.