Roman, regarding your comment about the Z06, I have a 2009 that's supercharged and puts ~700 whp to the ground. It's the quickest street legal car I've ever driven (I got a 184.3 mph run last March in the Texas Mile in a Shelby, but on race gas and with open exhaust).
The torque on the Z is ferocious and a delight, esp. with drag radials. I'm anxious to compare it to my M3 with your 625 kit on it.
BTW, I'm going back to the Mile in October and will break 200 mph with a bit over 1,000 whp in the Shelby.
Dallas, TX USA
Burnin' gas for 50 years and still going!