I just got new front adj control arms (both upper and lower) and a rear lower, does anyone know how long I would need to adjust them from eye to eye for a 3” lift to get everything lined back up, or how I would be able to get that info?

 

Check the manufacture's website. Rock Krawler has the lengths for 2.5, 3.5, 5.5 on theirs.

 

Set them with the manufactures specs then place an angle finder on top of your upper ball joints to dial the UCA's to about 4* and you'll be pretty close. You should be able to find a thread on here about front end alignments.

 

Since most 3" lifts vary in actual lift height, you'll need to adjust the front by setting your castor to + 4-5 degrees. For the rear, you want your drive shaft to be close to level with your pinion. TeraFlex has great instructions that apply to all adj arms.