Quote Originally Posted by bigdare23



The bolt pattern shouldn't be different between a b18a and b18b head
All of these quotes are off of honda tech:

Please search, this has been covered a million times. It's mainly head differences (cams, intake manifold bolt pattern, etc.), but some of the holes for the sensors may be different in the block (not that big of a deal but there are differences).

Also the b18b has bigger intake ports.

92+ heads has bigger cams and a bigger im.