Check out Douglas DC-7C BOAC 3D model on CGTrader for $89. High-quality Polygon mesh mesh by Dreamscape: 163177 polys, 83967 vertices. Rigged, Textured, UV Mapped.
STL (Stereolithography, filesize: 2.21 MB), OBJ (OBJ, filesize: 2.38 MB), LWO (Lightwave, filesize: 847 KB), OTHER (Other, filesize: 2.83 MB), 3DS (3D Studio, filesize: 828 KB), 3DM (Rhinoceros 3D, filesize: 1.56 MB), DXF (DXF, filesize: 2.06 MB), DWG (AutoCAD, filesize: 2.08 MB), MAX (Autodesk 3ds Max, filesize: 1.03 MB), TEXTURES (Textures, filesize: 1.78 MB)