Wouldn’t matter if he did unless it’s mini-tubbed and 3” spring relocated. I’ve got a 68-70 B rear in mine, and even with a 1/2” spring offset I’m still only at 7” backspace with a 10” rim. Even that’s super tight on the springs. It works because I have 18” wheels but with 15’s even my specs wouldn’t leave enough room for the sidewall flex.
