2010 tacoma with 2 in lift in front. driveline vibe and carrier bearing issues

So when i bought the truck about three years ago, i had a 2in lift put on the front of the truck. I did this so i could fit some bigger tires and wheels on the truck. Now im on my third carrier bearing, and have had a drive line vibe for awhile. I read something about installing shims under the rear leaf springs to solve this issue. If so how do i find out what size i need? Is this a good fiix? ive also heard installing a 1 piece drive shaft would solve my problems as well.

 

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