UK dealer Coopers recently published a dyno chart for their 865 conversion. Peak power 61 bhp, peak torque 61.5 lb-ft.
How does that compare to your measurements?
Parts added: S&S 865cc big bore kit with high lift cams, power commander, Air induction kit, HD S&S clutch kit and a hand made exhaust.
(On the same dyno a stock bike makes around 42bhp/45Nm.)