Back when I had my 88, I used to frequent a site called ludespeed or something of that sort. they used to claim to be able to take your b20 head and basically overhaul the entire thing for vtec. but keep in mind this was... almost 3 years ago. so its probably long gone. just a thought, im not sure i believe a word of it, but it was advertised on their site for around 1800 bucks i think?