You might have trouble with the 16" wheels in the front rubbing on the steering. The offset in the rim may make the tire run more inboard than it should. I had that trouble on my 59 3800. 16.5" rims work fine, but the 16" rims I tried did not.
1959 Chevrolet 3800 Pickup 1937 Chevrolet GC Panel Can you still call it a barn find if it's your barn?