Rear upper adjustable control arms

[YardPig]

Rear adjustable upper control arms.

Are they recommended with a lift to dial the pinion angle back in and ward off vibration?
My arm bushings upper/lower are looking pretty tired, wondering if it worth doing when I do the lift.

With poly bushings do you notice substantially more road feel in the back?

 

[ton504]

I have the ome 860s which is about 2.5" lift. No vibrations what so ever. I went with toyota uppers and spc lower(thicker bar).

 

[YardPig]

Thank you!