I have heard about people putting together B18C1 heads with B20B blocks, and building their own engines. I have an opportunity to buy a B20Z block for cheap and I was wondering if anyone knew if that would work with that same head? Also what mods would be needed to make it fit? Right now Im open to any suggestions.

That should work, check out crvtec.com (http://www.crvtec.com)