I would be very interested to know what you did to it to get 30-35 HP from a model 28. I have been around racing engines all of my life (30+ years-spent 3 years as an intern/broom pusher in a professional motorcycle racing machine shop). In my estimation the model 28 I used in 2011 for an attempt at a National Championship in FX came no where near 35 HP, this included true roller rockers, custom induction, numerous hours of constant refinement, and even consultation/product development with true industry innovators and professionals. I feel that I used the best materials available, if I did not I would be interested in what else is out there.