Similar idea, I have a toolbox hitch bracket I bought at Tractor Supply that slides into a 2" receiver that bolts onto the square bumper that I use for my Honda EU2000i generator. The bracket doesn't take up much room in the bed of the truck and is easy to install when I set up. A dog crate sites on plywood bolted to the bracket and protects the generator from the rain. The grill should fit on the bracket as well. You can bolt a piece of plywood to the bracket to create whatever size work space you want.