Hope this is not true. Moog Offset Upper control arm bushings.

AFAIK, you have to install the forward bushing with the offset to the outside and the rear bushing with the offset to the inside. This will allow the ball joint to move towards the rear. This will allow more caster adjustment. If both are offset to the outside, this will impact camber, not caster. Correct me if I am wrong. But this is how I did it (all those many years ago).