Piper Cherokee Six 300 V12 (Polygon mesh 3D model) is available on CGTrader for $89. Original author: Dreamscape. Specs: 40854 polys, 21530 verts.
STL (Stereolithography, filesize: 1.65 MB), OBJ (OBJ, filesize: 1.41 MB), DWG (AutoCAD, filesize: 774 KB), DXF (DXF, filesize: 752 KB), MAX (Autodesk 3ds Max, filesize: 319 KB), LWO (Lightwave, filesize: 526 KB), TEXTURES (Textures, filesize: 3.4 MB), OTHER (Other, filesize: 1.65 MB), 3DS (3D Studio, filesize: 309 KB)