Just finished my wheel swap (along with many other upgrades). I should have done this YEARS ago. Its hard to believe how much a couple less centimeters difference in diameter completely changes the feel of the steering wheel. Thanks to JPM Coachworks for the awesome alcantara wrap job too.
I was fortunate that someone had already changed the wiring in the wheel to allow the 04+ CC stalk to work with the WRX clock spring, but this thread was very helpful for the swap.