Bobcat S66 Skid Steer Loader 3D model is available on CGTrader for $79. Original author: berkekose. Specs: 209183 polys, 201773 verts.
STL (Stereolithography, filesize: 77.8 MB), OBJ (OBJ, filesize: 77.8 MB), MAX (Autodesk 3ds Max, filesize: 38.9 MB), 3DS (3D Studio, filesize: 77.8 MB), FBX (Autodesk FBX, filesize: 77.8 MB)