Having a shell made this pretty simple. We opted for a Power Tank bracket after trying and being pretty disappointed with Quickfists. The closer to the rear door the better for access when airing up. We tried at first to install the bracket with well nuts… but the plywood wasn’t thick enough. So we went all the way through with 1-1/2″ bolts. Everything was sealed up with the same sealant FWC uses at the factory, Silaprene.