Have 94 coupe and looking to yank the sohc for the dohc. I'm moving toward the B20, but wondering which would be better B or Z for the swap? I'm looking into put a JDM ITR head and tranny, with possible reconstruction of (cams,ret,valves, and springs) and want to know if there will be enough piston to valve clearance? Or stick with stock head and throw in a CTR intake cam. Also looking to put in pistons,rings and lighted rods and wanted to know if this could be another problem? Any tips or help would be awsome. Thanks