I wouldnt do it, you will only lose top end! What you need is the G-Power Stage III kit, that will destroy any RS6. You guys in Russia are doing the 0-1000 m or more, you´ll have all time in the world to leave any RS6 behind you...even though they are badass from a standstill. I would actually love to see a G-Power III against some of the supercars, it´s a car that an RS6 won´t be able to compete against, it´s just too fast for those RS6 MTM/Evotech!