It looks like your kit comes with everything you'd need. http://www.summitracing.com/parts/RAN-RS98509
If you have any intention on going with bigger tires, I'd seriously consider hydraulic assist. Even with my old 35's on factory offset rims, it would occasionally have trouble turning the tires at a dead stop. Now on 37" boggers on deeper offset wheels, its noticably more difficult and more frequent to turn the tires. PSC makes a hydraulic assist steering kit for our super duties that's about 600 bucks. You ship em your steering gear box and they rebuild it, and modify it (drill and tap) for fittings for hydro assist, comes with the steering ram, and all the lines and fittings you need. You can steer with one finger at idle at a dead stop, and it acts as a steering stabilizer too. I think Robb, jetjock has hydro assist, not sure what brand. Its high on my list as soon as my trans is back.
On another note...if you're getting death wobble there's likely other issues like alignment, or worn steering components. I've had lots of lifted vehicles, jeep on 35 boggers, Cherokee on 33's, straight axle Toyota on 37's, bronco on 38's and 44 boggers, battled death wobble with all of em, well versed in all things death wobble. You probably need more negative caster, a hair more camber wouldn't hurt either. Adding an extra degree of negative caster (rearward tilt of the steering axis) can go a long way, but odds are there are some things that are worn out, even if only a little. The hydro assist will help hide it, as can extra castor, but you'll still wear the tires poorly if you have worn tie rod ends, or ball joints, drag link, track bar (which is often the culprit with death wobble, the track bar, or at least the bushings or rod end). Good luck. I feel your pain with crappy roads, despite the name of this area, 'Hampton Roads' we have some pretty crappy roads.