I'm in the same position are the OP was before he made his swap. I have an 06 2.5 wagon with a bad bearing.
Based on what I've read here, having all the parts ahead of time is important and if you manage to get them all from the same vehicle, you're ahead of the game. So with that said, if I were able to pick up an entire car (at auction), would I be delusional in thinking the swap would be as easy as "unbolt here -- bolt-in here"?
The EJ-series swap thread lends me to believe that the interchangeability between mutliple vehicles is fairly simple but that thread was also posted a long time ago :P.
Just looking for more advice/input from the experience crowd we have here.
For reference, I have the opportunity to bid on a 2004 WRX wagon with "minor" corner impact.
Thanks in advance!