Birrana

It also constructed a Holden Kingswood HQ for Ramsay to compete in Group C Improved Production Touring Cars racing.

Ramsay brought the Birrana name back to motor racing in the 1990s running a series of Reynard Motorsport built Formula 3000 chassis in the Australian Drivers' Championship.

[1] Alcock was a designer builder who had previously worked for Elfin Sports Cars in Adelaide and for Brabham, Cosworth, McLaren and Cooper.

[1] It was later sold to Peter Brock,[1] and subsequently won the opening round of the 1973 Australian Formula 2 Championship in the hands of Leo Geoghegan.

[1] Leo Geoghegan used a factory team 273 to win the 1973 Australian Formula 2 Championship from Enno Busselman in a 273 entered by Bob & Marj Brown.

[1] Peter Brock also drove an ex-Leo Geoghegan Birrana 273 during the 1973 Australian F2 Championship, finishing second at Oran Park and sixth at Amaroo, while also winning a number of non-championship races.

[1] There were three 374’s made by the team all that were very successful on track The S74 was a speedcar built to run at the Adelaide International Raceway half-mile bitumen oval.