The basket case 72 SL350 I'm resurrecting came with a thoroughly trashed cylinder head and stuck pistons. It came with a spare CL350 motor, but the head on it is also unusable (well, by reasonable standards...) I'm on the lookout for a 350 twin head to keep my build progressing. I understand the SL had different sized valves than the CB/CLs. I don't care, either will do. I'm not doing a faithful restoration, and I'm already using the CV carbs from the CL anyway.