hello im new to this side of the site need a little help

soo my friend ahs a lude 90 2.0si with a b21 or the 2.05 and wants a vtec head to put on it. what vtec head well fit on this block? and how hard is it to put a h22 in this year of lude

I'm not positive, but I've heard that putting an h22 in will cost somewhere around 6 grand, start to finish, to put into that body style.

dose no one know about a vtec head swap for the b21 can i use any vtec head i know a b16 is to work but could i use a b18 or something?