It's a (dirty) Mopar Rat, top to bottom, front to back, cross-ram

I love it aside from the "headers" those are gross. I'd just swap them for some raw long-tubes to keep the old rusty look, clean it up overall, put new joints in the suspension arms and probably new air bags, then drive the hell out of it.

After I talked him down to about half his asking price, more just because I can't afford more lmao