[68 TT]

Originally Posted by bluex

When I shortened mine I set it at about 1.25" with the stepside bed. I believe it is closer to 1" now with the fleetside, but the front panel is bowed. If you want it correct you have to watch the wheelbase also which should come out to 131.5" if I remember right.

You need to be careful tightening up the bed gap too much if you actually use the truck to haul anything or do any kind of off roading. The frame flexes quite a bit and that gap diminishes rather quickly when heavily loaded.

I would hate to see a crease in your cab from the bed rail contacting the cab under load.