One other problem you will have is the tailgate, especially along the bottom (huge gap when closed) I used ‘d’ shape seal to the tub body, side bulb seal to the tailgate bottom and some pool noddle … bit of a Jerry rig but it works (Hopefully you may have something better) The other bit of advice, if you go through water crossing (unavoidable) be aware water may enter your tub not matter preventive measures, I have seen many fridges and batteries short circuit because of this. While I wait for the car to cool a little before crossing water of decent depth I pack my fridge up 150mm or so and disconnect it, tray battery to if needed. Then once crossed and waiting for brakes to dry etc, drop your fridge back down and check fridge and battery connections are dry etc.
Make sure your Seal the front close to the cab mine leaked in the middle and was a pain to reseal after I had the roof top tent on top. I cbf taking it back off. I. Bolted the kings 100kg roof top directly onto it with spacers to get clearance for the roof.
