Unsure on the exact spec as purchased them used, off the top of my head they're 17x8, unsure on the offset... Without saggy butt spacers when I have a heavy load in the back the rear will rub over heavy bumps, but that's the only time I've had rub!
Finally got out and took some... somewhat decent photos after the Legacy has been lowered! STI Pinks and Spec B Rev C. Bilsteins lead to a sporty... albeit harsh ride!