Input (grade 9): As both engine and chassis are included in the make name, chassis run with different engines (e.g. Lotus-Ford, Lotus-BRM) are counted as two separate makes and points are scored separately.
Output (grade 9): Because both engine and chassis are included in the make name, chassis run with different engines are counted as two separate makes. For example, Lotus-Ford is a make different from Lotus-BRM.