I noticed the website also had spe sheets and parts list for specific drum/brake assemblies. I think you would have to look on the camper axle drum area to know for sure which you have.
2011 FR Rockwood Premiere A126 Hard Side
TV=2011 Jeep Wrangler Sahara 2 Dr
Reese 66065 WDH, Curt WDH Shank #17120
Prodigy P2 Brake Controller, Mopar 7-pin Harness
B&M Transmission Cooler (#70268)