when I had a 2nd gen spacecab Ram 50, I had a 93 up shortbed ranger tonneau a neighbor gave me - cut the frame down 1/4 to 1/2 inch and it fit fine for a while until the stiching went on the peel off cover and it peeled off on I-70 one day at 70 mph - that was the end of using it - I did retrieve it, semi tire tracks and all.