I am not with Laminar Research; just a flight simmer.
Although I have spent time in an Airbus 320 flight simulator I am not able to answer your heading question when you joined this forum.
Confusion and or assumptions are made that there are connections between websites when a name is extremely similar.
Laminar Research is the developer/creator of the X-Plane software and their web site is X-plane.com and their forum site is the one you have raised your query on ie this site.
My understanding is the site you make reference to is another forum for X-Plane users and has no connection with Laminar Research and or this forum. If there was a connection then the airbus 320 would be supplied as part of the X-Plane standard aircraft. There are many other forums for X-plane users as well
If you go to another site www.x-plane.org this site has no connection with Laminar Research. If you go to the store tab and enter A320 in the search engine you will find the airbus A320 version you are seeking developed by Flightfactor
There are modified versions available as well on the same site if you google correctly. If you google Flightfactor you will find it is available for sale on their site as well.
Also if you google JARDesign or Aerosoft or Simmarket you will find it is available for sale on their sites as well.
Good luck in finding what you want.