Hey King, for the VB-Z anyways .. apparently Greg Degani says to use the the V01 piston in the VB-Z and its rock solid.
If I ever need one done I'll be sure to fire you off an e-mail. Dont have any engines yet that need it :P Always been a little sceptical about resizing though, but it seems everyone thinks its great
So I guess I'll try it when the day comes.
Thanks man