I recently acquired an old Thompson Sea Coaster with a 40 HP Johnson that would appear from the cowling design to be a 1965 (pic attached). However, the model number (40363-DA) indicates that it is a 1963 40hp Electric Shift Evinrude. The confusion runs even deeper because I have found owners manuals for both a 63 Evinrude and a 65 Johnson in the boat. Is it possible that I have a "Frankenstein" of some sort. I'm not really worried because it started and ran beautifully in a test tank after 10 years in storage. I'm just curious and will need to know when I go to buy parts. Any help would be appreciated. P.S. This is my first post and I'm really looking forward to participating on this site.