2000 Polaris 550 Indy SS Needs Motor

[Powers]

I recently purchases a used 2000 Polaris 550 Indy SS and found out after 1/4 mile of riding that my crank, bearing, & top end need replacement. Does anyone happen to know where a used 550 fan cooled motor would be available? Or does anyone need a parts sled in good shape?

Thanks,

Glenn