I used a 1/8th aluminum plate. The edges and switch holes were done on a mill. I used a hole saw for the radio hole. Then gave it a nice carbon fiber wrap.
This turned out really well. I will try to get it installed tomorrow and post pics.
I have an air compressor from an airbag system that I an going to mount with a small tank. I'm still trying to locate it. It challenging but I have a plan. The small portable 12V ones are ok but they struggle to seat a bead if you break one. I also have one other thing that I need the air for.