Features pre-packaged versions (like China Southern or American Airlines) that often include Virtual Cockpit (VC) upgrades and custom sounds. FS2000.org
If you use P3D, look specifically for the "TDS 737 MAX 8 for P3D v4" conversion pack, which includes updated model files and a P3D-compatible .air file. fsx tds boeing 737 max 8 base package
Happy landings, Captain.