Group 5: Under 2.0 litre purpose built racing sports cars (sports racers) as raced between 1960 and 1972. World Sports Car Championship and World Manufacturer's Championship GT's and prototypes as raced between 1960 and 1972. USRRC sports cars and Can-Am as raced before 1967 with invited later models. Front engine 'specials' as raced after 1959.