Ford Anglia 105E. Home modifications and some imported parts brought many class wins and overall places in 1961 and 1962 on the newly inaugurated Kyalami Racetrack. Upgraded to a Cortina 1200cc in 1963. In 1964,
Ford Motor Company SA donated two
Lotus Cortinas to the most successful SA Ford racers. (1 to van Rooyen and Superformance, a performance shop where he was Managing Director, to race in the new countrywide SA Saloon Car Championship and 1 to Willie Meissner, talented ex-GSM Dart engineer, of Meissner Motors and driver Koos Swanepoel, who raced an Anglia 1500). BvR car at first could not keep up and Swanepoel won the 1964 SA Saloon Car Championship. In 1965, van Rooyen's development skills surpassed Meissner, his nemesis, and he was faster and won all or nearly all the races. SA Saloon Car Championship racing became so popular with race fans that in 1966 Ford SA donated the new Ford Mustang V8s to the same pair. BvR car was consistently faster and he won all the races to become 1966 and 1967 SA Saloon car champion. In 1968, Alfa Romeo had imported an Auto Delta Alfa GTA but it was not fast enough, so they persuaded van Rooyen to develop. (He had been racing Alfa GTVs since 1966 in the Onyx Production Car Series, additional events at the Kyalami venue.) Van Rooyen developed a short stroke 2000cc engine which soon lapped faster than his Mustang and started competing very successfully against Meissner’s and Ford SA's new Escorts with 1800cc and 2000cc 4v engines. Arnold Chatz took over later on when van Rooyen became involved in Single Seater Racing. He had been persuaded to race the older ex John Love Cooper Climax against world champions in the 1968 South African Grand Prix. Enjoyed single seaters debut so much that he imported a newer Brabham to enter in the rest of the SA events for the balance of the 1968 year, then a 1968 MacLaren for the 1969 year. Managed 3 F1 wins by the time he participated in the 1969 SA Grand Prix. Later in the year had serious accident on the Kyalami straight while tire testing that destroyed the car, and needed time to recuperate. It seemed van Rooyen so impressed the Grand Prix F1 teams with his 1969 Kyalami Grand Prix driving that he was offered a F1 engagement by Ken Tyrrell to immediately join his team as a 2nd driver behind team leader Jackie Stewart. Due to his injuries from the Kyalami crash this was no longer possible. In 1970, van Rooyen continued racing in Onyx Production Car Series and won the Onyx Production Car Championship in an Alfa GTV. During 1971,
Paddy Driver offered van Rooyen his older F5000 single seater to try out, to see if he still had the racer's heart, and van Rooyen finished 3rd and 1st in F5000 behind two F1 cars, satisfying himself. New regulations were introduced in 1971 for the Transvaal Production Car Championship. The car to beat was the Ford Capri Perana V8 (a special SA vehicle made by Basil Green Motors). Van Rooyen purchased one of these and was soon able to beat the factory car regularly. This special edition SA car gave van Rooyen an idea! He made a proposal to General Motors to market a vehicle similar to the Basil Green Ford Capri V8. Developed their Vauxhall Firenza, using a 302 cid Camaro V8 engine and running gear. 100 vehicles would have to be built by GM (SA), which van Rooyen convinced them to do, and were sold locally to make this car, dubbed Chev Can-am, race eligible. Two of the race vehicles developed into highly successful racing saloons. They set the first saloon car 100 mph lap record, won their debut race, and went on to secure easy victories as many competitors were deterred from taking part. These Can-Am cars remain popular with collectors today. 1977 took him to Australia to compete at the well known Sandown 500 and Bathurst 1000 events, in a local GM Holden V8
Torana against the Ford V8s. He made 4th place in the Sandown with a dated model A9X. The SL5000 he was sharing with British Saloon Car Champion Gerry Marshall at Bathurst retired with a broken seat. In 1979, race organizers introduced a new racing formula, allowing any engine/chassis from one make to be combined. Fiat SA was interested. This required fabricating a space frame vehicle with fibre-glass panels to look like a Fiat 131, mated with a turbo charged 2.5 litre Ferrari v6 600 bhp power unit. This car quickly proved one of the fastest saloon cars in the type of racing, but shortly after the debut Fiat decided, pressured by sanctions against SA, to pull out of the country. The car was sold off, but still raced by other drivers. The formula was shortlived. ==Endurance racing==