It shouldn't be too hard. Drill and tap a hole in it for a common screw thread, like maybe 1/4-20, and using a bolt and a spacer for the receiver, do the flywheel puller trick on it.
That should work. Or, use a LONG bolt and
get a chunk of steel drilled so it slides over the bolt freely, and you've got yourself a slide hammer that should rip that sucker right out.