Tex, do you have a build thread of yours? What you got done on it?
I do not, it was a 2003 year model. I added high-speed gears and A/C. I was going to strip the troop carrier and build out an enclosure with a pass through to the cab. I love them, they are simple, easy to get parts for and with the higher gears you can touch 70-75mph when you need it. 60mph was a nice sweet spot for it though. I did some sound dampening in the cab to cut down on the engine noise, definitely cuts down on the stress from in cab feedback over long hours on the road. I had planned to do an electric commercial grade 18K winch front and rear and BD lights all over with a rack on the roof of the cab.
If you can find a hydraulic pass through winch off of a FMTV wrecker that would be a nice addition. I really like what the guys at Mule Expedition Outfitters have done with their M1078 and I'd look to their build for a little inspiration. There are a few well documented builds out there if you do a search and Unimog's, MAN's and Fuso's are good to look to for build ideas as well. I am looking forward to seeing what you do with yours.
If you can swing it, snag those High-speed gears for yours now, they are hard to come by and are highly sought after. I know of one guy who has the ability to have sets made in the future but getting him to do anything takes an act of congress. He's a great asset for parts though. Shoot me a PM if you have any other questions or comments as I don't want to clog up your build thread here.