Quote Originally Posted by edwardb View Post
Technically, I think you're correct. But that setup (I have the same in my truck build) doesn't have a lot of shock travel to adjust. Depending on your planned ride height, you could run out of adjustment one way or other other. IMO, not quite as simple as use either hole and make up whatever difference is required by adjusting the spring collars. Use the hole that gives you the most adjustment. In my experience, a street machine with "normal" ride height is going to need the lower hole.
I'm going to use the QA1 shocks mounted inverted to be able to access the adjustments. I just can't figure what difference it would make to use the upper vs lower holes in the upper control arm.