This is a video of the roof rack I added to my Leer truck topper / cap.

100XR Truck Cap Camper Shell

Pick my topper/cap! Chevy Colorado & GMC Canyon

RAM TRXs with Bed Caps, Let's See Them!

Paint your truck shell for cheap @$50 USD

100XR Truck Cap Camper Shell

Z2 Truck Cap : A.R.E. : Truck caps, truck toppers, camper shells

X-ONE Aluminum Drop-In Truck Pack for Pickups

Thule Podium KIT3113 Base Roof Rack for Fiberglass Truck Cap by

How I Built a Simple Roof Rack for $300 - DIY Prinsu Alternative

Custom Truck Accessories - Leer & Commercial Products

100S Fiberglass Truck Cap

Truck Camping: My roof rack set-up. Advice & personal