Yes, in a certain way; both amps run on 6V6 tubes. Soundwise they arev very different amps. The Z sounds much tighter and has that growl when pushing it.
No problem. Angus actually doesn't use that much drive:
"It is. The amp is set very clean. A lot of people who have picked up my guitar and tried it through my amp have been shocked at how clean it is. They think it’s a very small sound when they play it and wonder how it sounds so much...
I think you'll have to dial an international code first. In my country this is 00 but it might be different in Australia. Maybe you can check with your phonecompany ?