Moog upper control offset bushings

Is it required to have eccentric bushings on both the forward and rear uca bush holes or do you just require 1 in the forward uca bush hole and a normal bushing in the rear uca bush hole
That's what I did. May remove and replace the rears, as I already have em. Just did LCA Bushns, and was Blessed to find a set of the Moog Strut Bushings. So before taking it to the worst of the best Local Yocal alignment places.....