Hey everyone, I have a 62 F100 with a 292 we recently overhauled.  We went fairly extreme with it.  Stoker kit with pretty high compression.  I have been having trouble with keeping one of my head gaskets sealed.  I finaly figured out whats going on.  Both heads are form a 57 312 y-block.  One is an early production and one is a late production.  So one has the extra bracing inside and the other doesn't.  What I am planning on doing is drilling thought the head and threading a bolt flush with head till it touches the other side acting like a pillar for support.  Has anyone ever done this and what are your opinions.