Went to the wrecking yard today... bought two 5 speeds for $95 and looked closer at that engine I mentioned a month ago with the H75 head on it. This engine really intrigues me. This time I looked for an indication of the size cast in the block above the fuel pump boss. There is none What gives? It was in a B310 wagon and it didn't have any emissions equipment on the intake or exhaust. Not even any provisions for emissions except a pcv. It had a foil sticker with a bunch of Japanese characters on the oil cap. Japanese crate motor? I'm contemplating buying it just to learn more. Different head than I've ever seen, maybe a different cam and pistons?