Perfect swap for your Wrx. This trans does not require different front axles, so front hubs are not required neither. A lot cheaper than going with the other US spec 6 speed trans. It has a 3.9 ratio so if being installed in 02-05 Wrx, a 3.9 rear diff is required. I also have a rear diff with 3.9 and LSD. JDM 6 speed trans with a new center diff (recently replaced $700) $3000 Rear diff with 3.9 and LSD $650. I can include axles if needed.