JD - 8RT Series Tractor (Polygon mesh 3D model) is available on CGTrader for $149. Original author: markos3d. Specs: 15013712 polys, 7653340 verts.
STL (Stereolithography, filesize: 190 MB), OBJ (OBJ, filesize: 153 MB), MAX (Autodesk 3ds Max, filesize: 38.4 MB), LWO (Lightwave, filesize: 204 MB), 3DS (3D Studio, filesize: 64.4 MB), BLEND (Blender, filesize: 302 MB), FBX (Autodesk FBX, filesize: 137 MB), C4D (Cinema 4D, filesize: 108 MB), HRC (Autodesk Softimage, filesize: 236 MB), MA (Autodesk Maya, filesize: 152 MB)