Thanks Techinspector1. Sounds good,I figured that with a mild cam I would be safe but I'll do this check,sounds very logical.By 'top hat' I was talking about the type intake seals that have the two metal rings,one at top,one at bottom.Come to think about it tophat was probably the slang used to describe the seal you mentioned.Mine look more like the 1800's style Russian hat,but colored blue