I currently have OEM rear CA's, and Currie fronts. I would like to get my rear wheelbase centered to alleviate the slight rubbing just above my pinch seam.

Which rear CA's should I buy first to do this? (uppers/lowers).

 

You have already trimmed the pinch seam, correct?

You will need both sets of ca's to move the axle. One set will only 'tilt' it for caster/pinion/driveshaft angles. (though I suppose the uppers first, since you will go longer on them to tilt the pinion up in-line with the tcase?)

 

Yep, trimmed the rock rails and pinch seam, but still get some minor rubbing above the pinch seam with the 37's.