Because he (who was a professional auto mechanic and is currently an aerospace worker..user error not likely) dropped 2 in a matter of 2 months, just sayin'.....kinda like "look for cracks in '302' heads". Its just an FYI. The more we know, the better. I would play the averages also, 100 in a million sounds good odds to me too. How about this: IF you do the swap and have the heads off, spend 8 bucks a hole and get new intake seats put in for peace of mind, how's that?
