Yeah, well I didn't think it would be a prototype, but who knows? On the other hand, when I removed the piston from the block, it had obviously been in there a VERY VERY long time and took the same amount of pressure to remove as a untouched power torque piston. Besides, it would be quite hard to Rebore the block as the transfer ports were just two decent sized holes next to one another with a gasket and a bit of metal on top.
