i installed a rev tech 2" and love it. I also installed trailmaster SSV,and BFG 315,70,17s. Not real sure about this death wobbel thing, i did notice after using my 4wheel drive when i first installed it that i did indeed feel a notiable amount of play that scary. So i got under the truck and noticed that my trailing arm bolt had worked loose and i retightend it with some thread lock. Happy to say that i have had no further problems and it drives like normal, with exception to the taller tires of coarse. And by the way i get a lot of looks and possitve compliments