Parts Needed to Add Roof Rack to Leer Camper Shell and 2021 Toyota Tacoma

I have a new 21 Toyota Tacoma with a Leer cab-height topper over the pickup bed. I want to adapt the Thule Hullavator pair that I removed from my former pickup to mounts on the new pickup. I have a 18foot long kayak that we regularly transport. For proper support, it needs saddles that are spaced 6 to 7 feet apart. So I need one cross bar on the topper, and one crossbar mounted on the passenger cab of the pickup. I want to install a ditch-mount assembly of legs and crossbar on the cab which I can do myself with the right parts, and one crossbar on the factory-installed rails on the topper. Can you supply all the right parts for this installation? The Hullavators needs 6 - 8-inch load bar overhang beyond the leg support to operate properly. I prefer the rectangular-shaped load bars rather than the aero-style so that the Hullavators can be attached with an under-bar strap.

asked by: Ken H