So you're saying the J32A2 internals will fit and work in the J35A4 block? I'm going to test fit tonight just to make sure. But it seems like the extra webbing and material on the J32A2 block must have been there for a reason if it was designed and manufactured like that. I originally was going to swap the J32A2 pistons onto the J35A4 rods and crank, but I've decided to save some machine shop money and a little time and just do the J32A2 internals. Also, I feel like the J32A2 forged crank might be nice to have as well and the torque gains from the J35A4 rods/crank are not worth the cost.