I've got A Model WG7, Serial # 465163 How do I identify year of manufacture. If I decide to restore, where do I get parts?

If you go to the website and click on the tech info tab and scroll down you will see a model,year and serial number chart.

http://www.wizardoutboardforum.com/techinfo.html

Yours is a 1951 model.
The Wizard WG7 is based on the Mercury KG7.

http://www.eastcoastmarineservice.com/wizard.htm

Some Parts available for KG7