They used the same ROPS on the 700, 720, 721 and 722 so that opens up a bigger market (the only differences in models is what powers them). There was a service bulletin requiring the addition of spacers to prevent the seat pan from hitting the elbows on top of the hydrostatic pump, so if you find one be sure to check the clearance there so you won't have problems later.Ok, guess its not a cage but a cab. I also need a radiator. Noticed that I don't have one at all.