Barracuda, Congrats on your new tractor!
For the rear hydraulics you could check this out:
Remote Kit for Kubota M59 Backhoe BT3951 | eBay
Prior to that though, call Messicks and see if they have the kit:
Home | Messicks's
If you go with an aftermarket 3rd function, be sure to check the flow rate as a lot of them are meant for around 10gpm, and your tractor puts out 16gpm. I have the WR Long kit on my Kubota L series tractor and it is NOT rated for continuous flow, so that is something else to check as well, since you would want the ability to use continuous flow.
David, thanks for the pic! Love seeing new ones posted of the
M59, and especially grapples

Here ya go...
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