Donnie Unger of DucPond Motorsports (now Winchester Ducati), my former race sponsor, built the engine from scratch (literally, I blew the engine up on the main straight at Summit Point racetrack in the summer of 2012) for me, since it's a track bike, not a full race engine, as an endurance racing build. Pankl rods, Pistal high compression forged pistons, 5-angle valve job, ported and polished heads, lightened flywheel, stock cams (indexed), Yoyodyne slipper clutch, velocity stacks, Hindle full race exhaust, Ducati Performance race ECU, Power Commander III, (dyno tuned by another former race sponsr, Rick Beggs at RnR Cycles in Sterling, Virginia). Mike Duzick of Mikmar Motor Service in Paxinos, Pa (another former race sponsor) did a lot of fettling on the bike right after the initial build, sorting various small issues, including getting the clutch stack perfect.