I think wheel circumference is likely about the same on the 3.0L ones, not actually measured but I was actually contemplating swapping the wheels from the SpecB to the Outback when the tyres need replacing. Might look weird due to larger wheels but smaller tyre wall but who cares what it looks like as they are better (newer) wheels on the SpecB
Are you needing anything in particular off the SpecB? It seems a long way to come to get one but hey I am always open to offers
Would more fly up buy the car complete and drive it back, recently had a crazy idea about a twin turbo h6 converted impresa so would only be a donor/breaker.