Well i decided to build my motor D16Z6 im going with the YCP Vitara Pistons with Custom Length FJ R SPEC D16 I beam Connecting rods. I was searching on other forums and i heard that you will get piston slap if you used the standard size pistons so im not sure if i should go with the 75.5mm pistons. Any help would be good sorry if this is a dumb ? its my first motor build.