Ron
I actually found out that the spots and brackets I have are roof mounts for a big truck so your pic is actually accurate. I'm thinking of mounting both like yours andjust driving in reverse!
If anyone else is interested in spots for a 60-66 they require a 12.5" long spot with a 31 and 31RH bracket in order to install. They go below the windshield and just above the door. Bob at accessoryland.com straightened me out.
mac