Ever noticed that the stepside bed width at the fenders is narrower than the front fender width? This kind of stuff bothers me so I widened the bed on my 65 Short Step by 4 inches. New angle brackets at the front are bolt on's. Made new "jamb" for tail gate out of 2" angle and 1 x 2 rect. tubing and added removable cables to hold tail gate in down position., Added internal wheel tubs. Cut and spliced in 4 inch wide pieces on all the sill plates. Assembled with fenders, roll pan mocked up. Added 2 inch filler pieces to each side of the roll pan. Filler pieces were used on the bottom of the fenders, kind of hard to see in this picture.