Ok, I won't be using the head gasket I had,the guy helping me position the 80 lbs lump of cast iron, while leaning over the fenders of the 37, dropped his end of the head a few inches.Dented the gasket,garbage.I called the local machine shop,he said the parts warehouse has one Felpro 261 head gasket left in stock.I'll use a stronger helper next time,lol.