[T Creighton]

Jason,
This is the profile I used a couple of years ago. I was lucky to be able to borrow the slides and frame to make copies as the rear of my cab was almost non-existent.
The square end has holes to rivet on a felt sealing strip.
The strips on the side edges and the hand grip are spot welded to the plate.
The hole near the corner is not part of it, just to hang the profile up.
Good luck with the project.
Regards, Terry