Well there it us, its a 400 block that has been decked to 0. Bored .040 line hone line bored deck plates all the good stuff. A friend has a shop so he did it all. The bore is 4.155 , the pistons are JE and they have a .250 dome on them so on a 64cc it would be around 12.5/12.3 . The crank is a 4340 Cola, the rods i don't rember but there H beams with ARPs probably eagle's. It has main and head studs ,and a tray. Like i said it was my old race motor. I pulled it out because the trans broke. And last year i primed it with oil just to keep her lubed up. It would be sad to see it go but i need the money. $800 firm+ ship but i would like it picked up.. Any other questions PM me..