Alright let me back up a bit. The eng (360) in the stock car now ready to go (so I thought) is boiling the coolant out in a matter of minutes. I have changed head gaskets (3) times with my added holes each time (a time consuming deal). the new 360 going together any day now I have done the same mods & I have a pic of the head gasket holes I added but I cant get it catalogued? properly on the computer so I can access/locate em to post. I have not torn down the errant 360 yet to visual see what is up & I was thinking maybe I shoulda left well enough alone on this one but there just did not seem to be near enough holes in the decks & if it ain't broke fix it till it is broke right! unless there is a crack in those chinese knoffoff new mag heads that that crook Ben Gorman of Promax in Indianapolis sold me then alright yes it'd have to be getting past the fire ring. decks were checked flat/holes tapped/good threads in block/on head bolts/proper torque value/sequence