Sadly, you won't find much in the way of lifts that large.
I used to recommend DodgeOffRoad, but have been told pretty bluntly that his customer service worse than sucks.
He was one of the handful that could build a large suspension like that. It was not cheap but the design was good and they worked pretty well. I would suggest glancing at his site though and looking at his long arm setup. Perhaps you could find someone to fab up a similar setup.
The folks that used to build 2nd gen stuff have moved on.