Williams FW11 from 1986, with the helmet of it's driver Nelson Piquet. The model comes with both Low and High Poly versions as MA, MB, FBX and OBJ formats
OBJ (OBJ, filesize: 28.2 MB), FBX (Autodesk FBX, filesize: 44.5 MB), MA (Autodesk Maya, filesize: 97.5 MB)