Douglas DC-5 Low-poly 3D model purchase 3D model is available on CGTrader for $15. Original author: Helijah. Specs: 145000 polys, 142000 verts.
STL (Stereolithography, filesize: 11.4 MB), OBJ (OBJ, filesize: 20.6 MB), GLTF (glTF, filesize: 15.8 MB), OTHER (Other, filesize: 24.4 MB), BLEND (Blender, filesize: 27 MB), FBX (Autodesk FBX, filesize: 8.78 MB), PNG (PNG, filesize: 6.93 MB)