A lot of people run the Eibachs, and Tein makes the S tech and H tech kits. The Tein S tech is the drop you are most likely looking for, although if you aren't wanting to spend the extra dough for adjustable camber arms front & rear, then the Eibachs are a very nice choice and look great. I would say anything under and inch you could get away with not messing with camber. You have any pics of the Z?