found an 8 3/4, what's it out of?

Hey guys, found this on craigslist. I called the guy, he was an old guy that had been getting mopar rearends out of cars to use in hot rodding model t's, but he didn't know what it came out of. He said the rearend had been sandblasted and painted, I think it's defenitely worth the money, just wondering if it'll fit in my '65 dart, or will I have to change the spring perches. BTW, he only wants $150 for it


The Add:
8 3/4 Mopar Rear End. 56" from backing plate to backing plate. All parts with it including a new set of brake shoes.