What was the result? As a Saab and Mustang junkie, I'll throw out the definitive power stats on the 2004 wagon. If it is an Aero model, it has a 2.3 liter high output turbo that produces 250 bhp. I've seen stock 9-5 Aero sedans (lighter than the wagon of course) do 0-60 in about 6.1 seconds. The sport mode on the doesn't affect boost, unfortunately, but it allows the transmission to hold each gear to redline, and sharpens the throttle response. Turbo lag is also minimal, thought still slightly present, on these cars.
I think it would be a pretty fair fight.