I ve wanted to do this since before i could even drive.
Build your own headache rack plans.
Drill your hole in both rack bases and bed to line up and bolt.
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.
This week i built a headache rack for my ford ranger solid as a rock and actually pretty simple to m.
Using the tape measure measure the distance from the outside of the top of the bed rails from the passenger.