: You can find the download files on community hubs like GTAInside or GTALand.

To use this model in your game, you generally need an archive tool:

: Typically includes high-resolution textures, working landing gear, and realistic cockpit interiors.

the existing aircraft files with the B-2 Spirit files.

If you specifically wanted a model to print and build:

an editor like GGM (GTA Garage Mod Manager) or Alci's IMG Editor. Open gta3.img located in your game's models folder.