I have the koni/swift setup on my 2012 Z. I would say it compliments the spring very well ( Aside the minor ) weeping on my adjustment knob on my front right shocks. Anyways if anyone is thinking about purchasing the koni's dont hesitate. ( still playing with the adjustment ( rebound ) settings to suite my riding style/comfort
btw i purchased and install the koni's and swift at Amplified Motorsport. Also the drop is alittle lower with this combo...but its bad AZZZ ..........