Stearman PT-17 Kaydet V06 (Polygon mesh 3D model) is available on CGTrader for $89. Original author: Dreamscape. Specs: 41472 polys, 21810 verts.
STL (Stereolithography, filesize: 695 KB), OBJ (OBJ, filesize: 1.46 MB), MAX (Autodesk 3ds Max, filesize: 309 KB), DXF (DXF, filesize: 721 KB), LWO (Lightwave, filesize: 540 KB), DWG (AutoCAD, filesize: 733 KB), 3DS (3D Studio, filesize: 288 KB), TEXTURES (Textures, filesize: 1.38 MB), 3DM (Rhinoceros 3D, filesize: 808 KB), OTHER (Other, filesize: 2.02 MB)