You welder-type people out there...going to attempt to fab up a little dog box for the back of my SxS. Would 1" 16ga tubing work? Box will be approximately 54" wide and 22" deep. Probably be @ 18" tall and plan to use intrabond for top/siding. Would potentially need to hold around 250-300lbs of people on it when waiting on beagles to push a nanny doe to my location.