Sorry for the overload.
Tank is 31" long x20 1/2 wide x11" deep. Filler is 2" internal 2 1/4 outer lip
Mount strap 12" from rear .
Spare wheel recess is offset approx 3" left 4 " right
Sender/pickup 11 " from your passenger side. Sender/float /pickup is 10 " long X 8" wide. Thanks for your help. I know US didn't have A body wagons in 60s. Ours were mostly Canadian with a mix of US and Aussie content until early 70s.