Check with Brad Lafoe at Lawrenceburg (Ky) Marine @ 502-839-3401. I was in his shop about 2 weeks ago to say hello and he had a lower unit for a 4 cyl omc sitting in his shop for sale as he ask me if I knew of anyone that needed one. Brad quit working on outboards some time ago and just goes to his shop to sell parts and work on his remote control airplanes and gossip with friends who stop by to see him. He is in his shop Mon thru Fri only.