well i have a 91 civic with a d16y7 block but i kno that this is a non vtec block!!! now every one siad that with that block they use a y8 or z6 head...how can i tell wut one it is???i didnt do the swap so i dont about this one all i kno is i got hooked the [freak] up cuz i got it 600 and its got a grip of mods on it coile overs, rims, racing sets, and more and have chiped p28 ECU.