Piper PA-28 V07 (Polygon mesh 3D model) is available on CGTrader for $89. Original author: Dreamscape. Specs: 35492 polys, 18650 verts.
STL (Stereolithography, filesize: 575 KB), OBJ (OBJ, filesize: 1.23 MB), DXF (DXF, filesize: 596 KB), LWO (Lightwave, filesize: 256 KB), DWG (AutoCAD, filesize: 618 KB), MAX (Autodesk 3ds Max, filesize: 233 KB), TEXTURES (Textures, filesize: 1.97 MB), OTHER (Other, filesize: 1010 KB), 3DS (3D Studio, filesize: 264 KB)