It is very much improvised lol. That is a $15 toolbox from Home Depot! Bolted to the rack with 4 screws through the factory holes. It's a bit bigger than I had originally planned but the next size down on all the options I saw were too small. I'll get a real case soon enough but I wanted a stop gap for the long weekend. I've included a picture of screw and nut packaging in case anyone else wants to know what fits the factory cut outs. You could probably step down to the 3/4 length and be fine as well.