You aren't going to see any significant change in ride height by changing upper arms. I recently read that doing the 1 3/4" drop netted 1/4 - 3/8 change in height.
Thanks, I like the ride height now and was hoping that changing them wouldn't make a big difference, I was going to use the global west arms , but now I'm leaning towards the Scp ones , I have the global west lowers and adjustable strut rods on now and they work great , but the Scp arms seem like they might have a better bearing in them and the ball joint is adjustable , the global west looks nicer to me but I guess you'll never see them anyway. Also with the scp there are no holes to drill .