tailgate and front bed panel was the same 54 thru 87, that would be 34 years
same bed panels 55 thru 87, only difference was holes for the fenders changes in 67 and 83
same bed everything 55 thru 66: panels, fenders and steps
the 54 bed had embossing for the fenders
mean while... ford probably did slight changes every 2 years so nothing would interchange
