need motor swap info on my 88 si'

i was wondering if its possible to put a b16 head on a b18 block on my 88 crx si? if so what else would i need to replace to make it work?

easiest thing to do is a search...lists lots of info on the subject...if you're refering to a b18a/b then this would be a good read
http://www.automotiveforums.com/vbulletin/showthread.php?t=576945