You might try Dan Gano as well. Dan sells old OMC parts only & has many bins full of 50’s & up motors. Reasonable prices too.
Dan had everything I needed for my 58 Johnson 18hp motor. Runs well now plus it’s electric start too! Thanks Dan as my E start was bad http://WWW.GANOTECH.COM or (712) 336-3297
Good guy to deal with for OMC parts only!!!
Jeff