I was looking for something to do so I decided to lower the Z to the max. with some of the bushings still intact. I removed 5/8" from the front bushing. 1 and 1/8" total from the top and bottom bushings in the rear. In addition to the approx 1/2" you can lower with just the bolts. What do you think ? I may raise the rear a little. Ride is a little more harsh but not unbearable.
Front
Left Front
Side
Front
Left Front
Side