Looking at those pictures and based on what Vortech said, I'd be really pissed at the person you bought it from... If I recall right, there's literally a yellowish-orange tag on the shipping plug that says "remove me". I'm sorry about your bad fortune.
A V3 with the Si impeller and the 928 bearings seems to be the ideal setup for the blower. The Si impeller flows a little better and the 928 bearings allow you to overspin it.
Good luck!
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