This specific 3D model, "Porsche 911 GT3 RS 3D model 3", is an asset made available by "Unknown author".
Can be downloaded at "Unknown platform" by following the link.
This specific 3D model is provided under the "Unknown license" framework.
STP (STEP, filesize: 240 MB), SAT (3D ACIS, filesize: 411 MB), IGE (IGES, filesize: 365 MB), OTHER (Other, filesize: 555 MB), X_T (Parasolid, filesize: 248 MB)