In fact, getting any AI aircraft, let alone the A320neo, flyable in your sim takes five minutes at a minimum!
1. You need the model folder, the .air file, and any repaint of your choosing. If you want a good A320neo paint, basically 98% of every A320neo operator is painted for the FAIB model, and the paintkit is easy to learn if you want to try your hand at a repaint that doesn't exist yet.
2. For the aircraft.cfg, panel, and sound, copy over one from any A320 on hand - Aerosoft, ProjectAirbus, iFDG, heck, even the default A321 is (decent) enough. Put in your fltsim entry with the correct details.
3. You're good to go!
For a slightly more realistic experience:
- There is a good CFM LEAP soundpack on here somewhere if you want one.
- In the aircraft.cfg folder, copy the [lights], [contact_points] and [exits] from the original FAIB aircraft.cfg
- The FAIB .air files are generally the best for non-AI flying out of all the AI models out there, but if you do feel that the plane is too fast/slow, you can alter the static_thrust parameter under [Turbine_Engine_Data]
Happy flying! If your PC is too weak to handle the heavier aircraft (or worse, there's no flyable version of an aircraft you want, like the A320/A330neo), try replacing the visual model with the AI one. Your framerate will skyrocket!