these are the #'s that are on the block: drivers side: 71 (then 1 1/2 inch space) 4257. Then on the pass. side of the block: c0n2, b51, 3994257, f0331caa, 11w235o590. I have been to the junk yard to get parts, and so far every thing that I have gotten has been for a 250 motor. thank you for any help!!!
