well what if he cant afford a complete z6 as of right now? yeah please use v-tec as some guys i know will talk alot of trash about there v-tech phones. anyways there is a little more modifications than you think. go here....complete instruction how too....might i add its the cheap way. vtec wired off of a shift light. rpm sensors.....but it works....it would be better to change to the vtec computer as it adjust the fuel and ign mapping while in vtec and while not.
http://crx.honda-perf.org/articles/z6swap/z6swap.html in my opinion though......depending what you pay for the head....less than 100 id go for it....anything more id just save up for a cam.