I got one of mine installed. I switched out the rotor for a Certified 12.5 HT rotor. Set up the gearing and timing where I ususally run my D3.5's and Kill Shots. Did some runs on the street since im not able to race for another week. This motor rips! It's really fast!. My friend and fellow Serpent teamate TQ'd by 3 seconds last night on his first outing with it. I cant wait to hit the track with it.