Thanks. As for power, 502MPI's. I add a better exhaust sys, roller rockers, different flame arrestors and a re-map of the computers. I'm not sure of the power increase but I did pick up 250-300RPM's. Best speed is 82.7 on GPS however, it averages only 78 point something anytime. I would like that number to be 85 but just not going to happen.