Graham Woodward:
1968 Mack R773 Tractor Unit (9.3 litre diesel)
Graham Woodward:
1976 Mack R600 Tractor Unit with crane (11 litre diesel - can pull up to 180 ton)
Graham Woodward:
1979 Mack F786 Tractor Unit (150 ton towing capacity)
Graham Woodward:
1999 Mack CH613 Tractor Unit (11 litre diesel)