I have been cleaning up and found some impellers that I don't need or have too many of. These are NOS OEM impellers.
386165 should fit '74-76 40 hp
389576 4.5-8 hp 1980s and up
389589, 77129 50/55hp 1979 and newer, may fit others
382702, 763982 25/35hp 1978 and newer
382221 1.5-4hp 1968-84
Applications are approximate I can double check if you send me a model number.
Many other NOS OMC parts
Adamgibb1961@gmail.com or pm here