Looks like an OD out of a truck or van. The adaptor plate on the shifter is the first giveaway and the rear shifter mount doesn't look like the holes were ever tapped. I would say for sure truck / van of the late 70s .
That can be used in an a body but with a lot of modification, you need to make a custom shifter plate and use the rear mount.
You can make it work but for the effort, I don't think it's worth it. I tried the same thing years ago and what a pain
