Craig, 200 is about right. Mine made 207 at the wheels with the deresonated centre too.
Also, when everyone talks about the Model Years of their cars is not the registration dates but just the model variant. So there was no MY55, just MY05. Which is the "blobeye" with some revisions - which in the case of a WRX is distinguishable from the MY03-04 WRX because it has red brake calipers, the upgraded interior (cup holders by the hand brake not pop out above the radio) and the inverted rear struts that you can't see!