I have a 89 1 peice rms block and I am trying to figure out how im going to build it. Ive been thinking about getting a 3" crank from a L99 chevy 4.3 v8 and the 5.94 rods with the 4" bore. But I am stuck, will I just have to use regular 350 pistons or will I need somehting with a different pin height?