AFAIK, there were no models that came with it as "standard" equipment. It was an option on all models that had hydraulic lift, but it turns out to be not that common.
As for more how-to info beyond that, others will be along shortly to help out. From what I've read (as I will be doing this this year to my 1864 as well), you "simply" stack the valves with adapter and appropriate o-rings, get your hoses, route them, and violla. Hoses will be the hard part, though; they aren't standard thread. You can either find someone selling the remote hoses on ebay and buy them or open up the valve and tap it to standard threading, then go to your Napa or wherever and have hoses made.
That's about all the detail I can get into right now at work. I'm heading out the door but that should give you a pretty good idea what you're in for
