60,61 chevy had dual headlights for the grill, but the hood is not double hump. jimmy grill has single main bar encircles the dual headlights differently. 62 chevy, single with oval rings, 63 had circles, 64 goes rectangular. 64 was the big cab change as well. dash with double humps is definitely chevy with idiot lights, my 63 had a tach and full gauges. jimmy had single hump dash and afterthought looking gauge cluster. the knobs with chrome rings (rather than solid black plastic) say custom cab, but the pillar chrome and side chrome are missing but with new paint...who knows. backup lights were also more common on custom cabs. My windshield had chrome...but again things get changed.
