Well, we'll see how it works soon. Will be installing them tomorrow. Looks like the lower intake gaskets didn't seal so I'm not going to pull the heads just yet. Will buy the thicker lower gaskets install the lifter valley girdle and pray she finally runs reliably. Made great power before the gaskets started seaping and pressurizing the cooling system and overheating. I'll just hope for the best I guess and see if my luck will finally change with this car. I'll let you guys know what I think once it's in and everything is up and running.