So my buddy just got an m6 convertible and my brother has a jaguar xfr. They want for a little run from a roll and the m6 came out on top by about 3 car lengths. I feel like that is about the same amount I beat the xfr by in my caddy. I have a 2012 sedan with tune intake and cat back exhaust. Is it possible that I might lose to an m6 convertible? The m6 is pretty heavy at 4490 lbs and I should have a little more power than it. I know the m5 and m6 are underrated and supposedly have 600 hp.