I remember seeing a film on 60 minutes years ago. They showed fuel spraying all over an interior when the truck was t-boned from the side. GM responded by moving the tanks outboard of the frame on the next body style. Nowadays they have the tanks inboard the frame, seems like common sense, but I am not an engineer. By the way, my tank is still behind the seat in my 64. I did go ahead and seal it with POR15 tank sealer to avoid stinking up my interior.
