I'm building a TTTT rock crawler out of a dead RT I have.
The rear suspension is done and has 360 of articulation... with no body or shocks yet. Obviously with those installed it will be less but I'm aiming for at least as much as my friend's modified OL.
The rear drive box also has about 3/4" of vertical suspension travel. I haven't used the original RT rear suspension kit yet but I'm going to take a look at putting that in too. It won't add travel over all, just make it more supple.
The articulating system for the front end is a work in process. It will have the same features as the back and I will likely go to a motor for steering but not a full servo.
4WD is also in the works. There will be a body lift too.