I just had a look at the old push in fittings that came with the pump, and it stated BSPT. So I think I found the answer!
Now I need to find a 1/2"ID 3/8" BSPT for the pump intake without needing to buy a pack of 10 from mcmaster...
Now I'm getting even more confused. According to here, it uses NPT! :shrug:
http://www.cooltechnica.com/Merchant...egory_Code=TAF
Edit: I found the answer here.
http://www.watercoolingshop.com/cata...roducts_id=165
Thanks again for your help!