My Glovebox Stereo Install

there's a local shop that bends a piece of sheet metal and drills/cuts it out as a bezel to mount the unit in ,then they cut the unused rear portion of the old box out to fit tightly around the perimeter of the sheet metal piece ,it looks real good like it belongs ,it is very dependent on the depth of the unit of course , I want to do one to put both a stereo and a row of 3 modern guage's in there out of site .