Measure the distance from the bed rail to the top of.
Build your own headache rack plans.
Measure the top of the cab of your truck with the tape measure to determine how wide you want the rack to be.
Tack the end pieces on to run with the bed flush to the front of the rack.
Cut your 1 1 2 inch 3 8 cm x 1 4 inch 0 6 cm flat strap into 4 x 6 inch pieces.
I ve wanted to do this since before i could even drive.
Using the tape measure measure the distance from the outside of the top of the bed rails from the passenger.