The second 4 parts of the series include the main chassis, the front chassis, the front lower wish bones and the first Tyre.
Strangely they have also sent Vettel’s head which I can only assume they have included as an option if you do not like Mark Webber. As far as I know British and Australian subscribers get a Mark Webber edition where as Germany are further into a Vettel themed model.
You can see the First wheel and tyre glued together in the Photo along with a battery to give an idea of scale.
Shane's Shed 