You might want to check with the people who sell aftermarket body parts for the bed floor metal as I think I seen sections of the ribbed metal in a catalog,as for a gas tank you can use up to a 71 ranchero or torino/fairlane wagon tank. i had a 64 falcon 2 door wagon that needed a tank and I had one from a 70 ranchero and used it in the 64 and it was identical.