Douglas C-47 Dakota RCAF (Polygon mesh 3D model) is available on CGTrader for $89. Original author: Dreamscape. Specs: 104958 polys, 55176 verts.
STL (Stereolithography, filesize: 1.56 MB), OBJ (OBJ, filesize: 3.38 MB), LWO (Lightwave, filesize: 542 KB), 3DM (Rhinoceros 3D, filesize: 1.4 MB), MAX (Autodesk 3ds Max, filesize: 497 KB), 3DS (3D Studio, filesize: 506 KB), DWG (AutoCAD, filesize: 1.56 MB), OTHER (Other, filesize: 2.08 MB), DXF (DXF, filesize: 1.49 MB), TEXTURES (Textures, filesize: 8.62 MB)