Carb choice

They leak, then the bowls get overfilled and fuel spills out of the carb. Corrosion from lousy gas, whatever, but it's happened to me a bunch of times. Maybe OK for a daily driver, but problematic if the car sits a lot.

The seal on the Carter/Edelbrock accelerator pumps can curl under and then they don't work worth a #^$&@. The old leather seals are the worst about that.

Carter/Edelbrocks can handle ten pounds of fuel pressure? Not in my experience.

Maybe you have better gas in Australia.