Looks to be in good shape. Measure the distance from your cab to the rear spring hagers on your truck. What is left over is how much overhang of the bed you would have. Most beds are designed to work with in a few inches of your rear springs( ie the hinges on the bed should be close to the rear spring hangers). You can always cut the bed down to fit. We did that with dads truck. It was a 12 foot and we cut it down to about 9 to fit the short wheel base truck. Might be a little harder on the grain type bed if it has a wood floor but still do able. Hope that helps some.
1994 F150
1968 Bronco
1968 F350
1958 F100 Great Grandfathers Last Truck
1954 F100 Dad's First Truck