We are selling our pit box we used for F2000, World Challenge and Circuit Battles programs. It can carry more then all the equipment you need to bring to pit lane and back.
It can take tires and 2 nitrogen bottles on the bottom.
The top section has a compartment that is intended for radios with a bar to hang the headsets and then velcro to hold the radios and chargers. Velcro needs to be replaced but no big deal.
The other 3 compartments are for general storage, what ever it is you may want to carry. We have added a tool box to the unit that we used in one of those compartments. The toolbox can come in and out easily if you do not want it in there, literally just slides out.
The roof is diamond plate, usually we would put front quick lift jacks on it.