It would be nice if someone would list the optional accessories, like remotes, third function valves, roofs, etc. Maybe even a break down of all the parts numbers needed and if Kubota sells it as a kit that part number too (with a picture and prices).
Right now the only way I can find out what's available is to go to my local dealer and search though his book while he watches and then ask him how much so I don't bother. For example I may have bought a rear work light from Kubota but I just didn't want to go through all the effort so I made one.