I'm doing some research on it. If I'm doing my math right i can obtain a .040 quench with the kb107 pistons and a .028 gasket. With the gaskets I got It will be around .062 which is over I know.
Why don't you just go forged with a Icon or JE/SRP or Wiseco/Pro-Tru? Why stick with a Hyper-U and fret over piston integrity and ring gap? Those manufacturers I just listed are quality pistons at affordable prices. I wouldn't hesitate to use the 107's gapped at .026" just like they recommend either--but if youre going to wring your hands about piston quality then just move to a real GOOD forged piston and be done with it. J.Rob