Its really hard to tell there is a drop. I would take some closer pics..or pics parked next to a stock Z. I dropped mine where the fenders were pretty much parelle with the top of the tire and the difference is clearly obvious, Im pretty sure it was around 1.1" or 1.2" . I think because you have black on black its harder to tell the diff..Mines PPW.

edit: did you just get springs or all new suspension?

 

Just the springs.