All the materials and material groups are embedded in the files. The body color is procedeural so you can use any color. The native file is sorted with all the different parts. You can look at the topology in the preview images and see if it works for you. In any case, you can reduce the polygons and vertecies in the native file.
STL (Stereolithography, filesize: 22.1 MB), OBJ (OBJ, filesize: 2.8 KB)