HEY ! That guy standing on the wing has the same beer gut I do !
That is my uncle's 1970 F85 W-31. The guy standing on the ground is Rich Powers, a very prominent Olds engine builder for Stock and Super Stock class racers back in the day.
Coincidentally ---- those Magnums were unique Motor Wheel produced Super Stock I Olds rallyes. They were 15x8" in the rear and 15x4" in the front. Jack still has an NOS set of those that are PERFECT. The unique thing is that Olds didn't offer a 15" SSI, so they snuck it past tech and everything else.

That picture is probably one of my favorite pictures of Jack's race cars.