[Tin Injun Tom]

They look sorta like the strato buckets except with a different type of head rest on them. Can't put my finger on it, but there seems to be a wide(r) flat section on the back seat than usual. I would guess these particular seats were something that was rarely ordered. The scanty description says leather seats. I've about never seen a 78-80 GP with leather. Maybe that's the difference in the pattern?
That padding around the pull strap on the trim pad looks different also.

I was trying to see if it has the rare litter pocket on the passenger kick panel. Can't quite see.