Some great cars in that bunch John.
I had a 1971 Holden Monaro Coupe back in 1990. I regret getting rid of that too but it's long gone. The Monaro is the roughly Aussie equivalent of a Camaro.
I also had a 1970 Holden Torana I built into an XU-1 replica. It was a rocket at the time.
Both cars are worth big bucks now. A good XU-1 replica will go for more than $20K and the Monaro is probably worth $30K I sold both for about $2K each.