I saw an Air Canada repaint on AVSIM last night, but it is only for a wilco/feelthere Airbus 321. Assuming that means that it will not work for the default 321 on FSX, where do I find the wilco/feelthere airbuses? I've checked their website, and all it shows are the ERJ145's.
That's correct, that repaint will only work on the Wilco.
Check this out: http://www.wilcopub.com/index.cfm?fuseaction=prod_airbus1