I have a set of GT40 iron F3ZE-AA castings. No thermactor air holes. I planned on porting them but wound up going with different heads. They are low mile take-offs. The engine had a piston pin noise issue and was tore down under warranty so they have very little carbon in them. I have a set of brand new 1.84"/1.54" stainless valves for them and a new set of springs, one piece retainers and keepers for them. $450
Bookmarks