Alignment specs after lift & SPC UCA's HELP!!!

I replaced my UCA's with SPC light racing just yesterday and I have my truck at a shop to have it aligned. They're asking me what I want the specs at, and I have no idea what they should be at with a lift and those UCA's. My answer would be to factory specs but I want to be certain where they should fall. I don't have much knowledge in that field.

My lift consists of Maxtrac 4" spindles, 1.5" strut spacers.. so roughly 5.5/6" up front. The rear has OME leaf pack and 1.5" blocks.. so 4.5/5" in the rear.

Tires are 315/75/16

I do a lot of hwy and city driving so any recommended specs for that environment would be great.

The control arms are set to what the company recommends at +2 caster till they get it aligned.

Any help or guidance would be greatly appreciated!

 

OEM specs, and more caster if you want it to track straight, but if you change caster through the SPC UCAs, it will push the tire closer to the firewall if you have clearance issues. Also, I doubt they will do it, but I prefer zero camber with regular driving weight.

 

basically tell them you want caster maxed out on the UCA and adjust to as close as they can to factory spec on lowers!

Edit:Its like the +3 or something like that setting. Check SPC website