Hi all. I finally had time to take some measurements and better pictures. The tire mount is attached to the Mopar Trail Rail system so it sits ~1.5" out from the front edge of the bed. It extends ~20.5" vertically above the edge of the bed which is below cab height by ~1.5" or so.
I have a 2025 Gladiator Rubicon X with the American Expedition Vehicles vertical tire carrier and a 37" BFG MT. Has anyone installed the RSI SmartCap with this setup and were there any clearance issues / modifications required?