thanks in advance

 

lower control arms adjust the position of your axle. after lifting your jeep, your axles will move closer to the center and adjustable lower arms will help you to reposition them back to where they were.

 

They can be used to adj tire placement in the wheel well, Wheel base and pinion angle. Although I think uppers help more with pinion angle

 

rear uppers allow you to set your pinion angle. front uppers are to set your caster - well, except for the fact that most adjustable uppers cannot be shortend enough to give you the caster that you may want so adjustable lowers are often used instead.

 

Thats what I was thinkin, thanks for the confirmation. I dont have rear arms yet, so I wasnt 100% sure. Although I just made a deal with another member for driveshafts, so now I need them so I can set my pinion. The money pit just never stops.....