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http://www.pcpowerandcooling.com/products/power_supplies/options/
you can get it most any way youd like, for a fee
simply removing that connector however is childs play for a DIY mod job
getting custom length leads ect is what most resort to the custom services for
IIRC, you can basically customize the types of connectors for a flat fee, provided you aren't doing like ATX to EPS12V. You'll have to call them for a current quote on that, but I can't expect it would be overly much.