The film that Paul Hogan's character screens is The Last of the Knucklemen (1979) which also features Michael Caton and Stewart Faichney.
Russell Gilbert was considered for the role of Vince.
Michael Caton would not appear in another film for 11 years.
The Scene in the garage Where Vince and Ralph are having a yarn( talking to each other) about the setup for the film tax dodge for gay marriage and a semi drives by and beeps it's horn , Ralph (Michael Caton) acknowledges the truckie "Hey Billy". The line was adlibbed just Michael Caton reacting in the monent.