Just about any lift is going to change your drive shaft angle, which will cause vibes, esp under load.
Some kits supply shims or other means of correcting the angle.
+1, I installed the same lift kit a week ago and had the vibrations until I installed the diff drop. No more vibrations and she drives like new....in a taller version.
Thanks for the feed back... I have the diff drop kit installed no luck. I did talk to the guys @ Toy tec sounds like I should drop the front end down a bit....Sitting taller the the rear right now. We will see if that works...
