I would recommend you purchase a good stabilizer. The Defiant kit is an excellent (expensive) choice. I have the Skyjacker dual setup and it has worked great, but it hangs a little low if your doing any serious off-road stuff.
The greatest contributor to "death wobble" is due to the drag link and track bar NOT being exactly parallel. If they are not, you WILL have death wobble. Steering stabilizers don't really cure death wobble, they mask it at times. They do however, help keep the steering wheel from jerking (bump steer) over the rough stuff. Death wobble and bump steer are 2 totally different problems. A lot of guys just run a single stabilizers, even with 37's and have no problems.