Well in theory it's supposed to be a 5mm drop, but it looked like a bit more than that on my car when I did it. Didn't measure it before and after though so can't say for sure.. but maybe the v6 will drop more.
You might be limited by the size/offset of the alloys you have. I run the 17" selespeeds on 225/45 tyres and with the pro-kit there's not much clearance to spare vs. the arch, so don't think I'd want it any lower.
Try doing a search on the sportlines but I'd imagine they'd be a disaster for the ride comfort, particularly if the roads are bad in your area!
Last edited by GavinH; 24-09-10 at 11:57.