Once back home, it was our job to mount the ARB air compressor and plumb the lines to the axles. Ever look under the hood of a diesel Super Duty? There isn't room for anything. Something had to go. A look around brought our attention to this vacuum canister for the heater-A/C controls. It is mounted near the passenger-side battery on the wheelwell. We figured a vacuum canister can work anywhere so out it went, leaving a nice spot for the compressor. We remounted the canister to the bumper brace in the right front wheelwell. It's tucked well out of the way of the tire and doesn't seem to mind its new home at all.