On the driver side, I had a better 1947 Oldsmobile fender than my Chev fender so I cut the top off it and blended it to the 1947 Pontiac fender.
Note: the gas filler on Pontiacs and Oldsmobiles are both on the drivers side, while the Chev fender has it on the passengers side.
So I had 3 gas filler holes to fill.
Brian