how come sled or mc motor is better?
More Torque , rev higher than 3600 RPM , MC engines generally have a stronger manual clutch with a 3 to 6 speed tranny , Sled motors big torque , high HP , higher RPM , strong Torque clutchs ....
AS far as buying one look on Craigslist and Ebay or your local MC & Sled salvage yards or dealers .. Bill