Pic looks like a hawkeye. Sure its not a MY2006 with the 2.5lt.

Edit:
Seems to have been covered before.
http://www.perth-wrx.com/vb/your-dri...first-rex.html

Your Oct 05 build date just means it was built in 05. It's actually a MY06, hence will have the 2.5lt donk.

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MY00 WRX. 89 Prelude. 99 CRV