There's no FRAKKIN WAY they are in the hole .100" or more. NO WAY. I just figured it on the United Engine web site and the KB107 sits .012" in the hole with the stock 9.6 block, 6.123 connecting rod and the KB107's 1.675" compression height. Something is WRONG somewhere. If the piston really is in the hole that much, it's NOT a KB107.