what do you know your right. lol Yea there's a automatic motor and the manual motor. One is higher compression than the other. that's funny

10:1 @ 12psi thats nuts. Your going to fry your motor if you don't watch it. lol
I would definitly suggest that you go with the lower compression pistons. you dont need the bottom end or the block, just the pistons I dont think there are really any differance is the block or rods.