I recently repowered with a Johnson 28 SPL but don't know the exact year of it. I know that it is mid to late 80's. Where is the serial number on this motor? Since the motor has been repainted and I can't find it, I'm afraid that it has been painted over. Is there any other way of detirmining the year of the engine? It would be possible for me to post pictures of it if that would help.