There are also several videos from Paul Short regarding this grapple as he installs it on his BX25D. Very informative & he is a master craftsman...! Should you decide to go with the SGC05, you will have to purchase it from your dealer as "whole goods". The grapple is offered by itself with an optional third function kit that includes all hoses, QC couplers, diverter valve, FEL joystick switch, etc. A bit pricey, but everything you will need with the exception of vinyl dust caps & plugs for protecting the QC hydraulics.
One other thing, the SGC is offered as a direct pin on or the Kubota Quick attach. My tractor didn't come with the Kubota QA, so I bought it separately. Now I can switch between my bucket & grapple in less than 5 minutes. Very happy with this setup...!