I have dropped my 2.8 V6 by 50mm front and 60mm rear. I have got the red type sport struts. Be aware, I only dropped it this much on standard struts because they are new! If you lower your car on standard struts that are shot (100k or so +) then the handling will not be great, to say the least! IMO it is not worth lowering if you are running old standard struts. My mate Mike, who has a 2.6, did exactly that on standard struts that had done 110k and the handling was absolutely dire!! I f I were you, I would cork out a couple hundred extra and get some ebay coilovers (the new sports struts I have cost the previous owner almost a grand from Audi!).....