This is a standard bore 991 block, casting date: F 7 56, front pad code 0224354 T 56 G (8 cyl. 3 speed). Crank: 3836266. Pistons are old Jahns domes. You can see the piston with a crack. Might be repairable if you are staying with Nostalgic parts. Rotating assembly was balanced. I couldn't find a number on the rods so far but I will keep looking. $200/Open to any offers, I would also trade for 57 Chevy 265 block of equal value. If you want other pics, just let me know.