The 1107017 model Delco is in a leage of its own being it was used for the WC & low production RC Tractors.  We have exchange units or we can rebuild yours to our higher spec standard. On occasions, you may find an Autolite Starter motor in the WC. We rebuild those as well, although good HD parts are getting tough to get for the ole' Autolite Starters. We always recommend switching over to a Delco unit down the road before parts run out for the Autolite Starter motors.