440 opinions

I forgot to write the numbers but it was stamped 440-2 i believe and did have the date of 77 year wise. I also saw the truck it came out of & its a 77 dualy(?). He did offer to let me check out the bottom end if I bought a new oil pan gasket to replace his. He also said if i gave him a day or so he could get it running for me. Asking price is 600. It has the truck oil pan & p/u it also has a expandable freeze plug painted over.