help with vibes

So I have a 05 ac offroad I just installed billies at 1.75 and a 1.5 aal yesterday today I went and got new tires 265/70/16 dynapro atm's they aligned it with no problems I'm getting slight vibes on takeoff in the rear and between 50-60 mph its like a pulsating vibe
I did alittle reading up and saw people using shims in the rear . I looked on toytec site and they have shims for 2-3" lift in the rear . Will those work for me or is there something else I need
Thanks for any input
John

 

a 2 degree shim should work, or you could try the carrier barrier drop.

 

Thanks hunter
i was at work didnt have a chance to check the site .