Need to know which head gaskets to run on steel heads.....I tried the FMS composite gaskets. Lasted for a month. Just installed Felpro 9333's I think there the old graphite style, They blew out around one of the water jackets and was leaking into the block. Im going to get the heads all checked out. Wanna know which will be good for gt40p heads..Until I get "real" heads.