Hey, I contacted the guys @ Altered Atmosphere who did my setup and they believe I'm between 2.5 and 2.75 inches lower than stock. I couldn't remember for sure and hopefully they are correct. Sounds like you're getting the Z put together nicely!

hey buddy! i c you got alot done with ur car since i last talked with ya! mine is still stock...still saving for the volks te-37's! a friend of mine is in japan and he went to up garage and found a set for my car for cheap!! anyhoo, im all ready to get my coilovers(same coilovers you got) and i just wanted to know how much you dropped ur car in the rear n the front? take care bro!