So here is my setup I did (has since been painted to match my interior). It's a 18ga piece of sheet matal I trimmed up to fit between the gauge bezel and the aluminum aftermarked overlay. I think it would work under the stock bezel as well. I then used the backing to a floor mount kit I bought a while back. You can make it out of sheet metal, but I had it laying around so I used it. I screwed it to the back of the controller and then used 2 HD magnets I bought off of Amazon. I can attach it to the panel or take it off and bring it with me if I want, which makes my truck harder to steal because aired out it won't go over reflectors in the road so it's nearly impossible to drive.
If I decide to do something different I just loosen the screws holding the overlay on and the panel slides right out with no evidence of it ever being there...no holes.
No issues with the door closed
