Yeah - I just went out and double-checked, but these are the OEM tires from my '13 Impreza Sport Limited.
Oh, and I think
I have answers to my questions, but would love it if someone could confirm:
1) Tire chains are actual chains that wrap the entire tire. Spring chains are metal ropes/cords/thick wires that go in a loose zig-zag formation over the tire instead.
2) I'm going with the*Super Z6's...assuming I understand #1 right