Just saw mention on another channel that a shop in Florida is making box floors, without going outside to look @ a stocker, not sure how close to an original they are, but will surely look better than a piece of 1/8 hot rolled, or checker plate:)
Tired of settling for flimsy patch panel sections? We now offer our version of a full bed floor repair panel for you're 61-72 F100!! Great for quality restorations!! Will work for short beds and long beds. Thicker than factory bed floors. For more info and individual or bulk pricing pm us. No limit on orders. Installations/restorations also available through Evolutionary Rides L.L.C in Brooksville,FL. Inquire within. 352-835-1355 Joey