Based in Adelaide and formed in 1971 by Malcolm Ramsey and designer Tony Alcock, Birrana built cars for F Ford and the Australian F2 (ANF2) winning the champinship in 1973-76. In 1975 two ANF2 274s came to the UK and were raced in Formula Atlantic one of which metamorphsed into the 1976 F2 Minos driven by Bobby Muir. Tragically Birrana was wound up when Tony Alcock was killed in Graham Hill's aircraft accident.
Birrana 374
There was a chassis, the 374, offered for sale by Birrana for F3 in 1974 but I can find no evidence that one was actually built or raced, the picture on the left appeared in Autosport with the announcement that a F3 was for sale.