engine

What what kind of horsepower gains would i get if i wanted to put a b18 head on a b16. Where is a good place to find one and how much will it cost?

why would you wanna put a b18 head on a b16 block??? the b16 head flows better than the b18. If anything I would stick a b16 head on a b18C block, aka the poor man's type R

hp gains not much of a clue but ive seen rebuilt b18 heads for around 750 - 1100 given if you want new valve seats ect.ect.

junk yard is the way id go for prolly around 60 to 100 bucks and then just clean clean clean the hell out of it