8pin pcie to 6+2pin 970 cable

[redhwk]

I recently bought an MSI GTX 970 Twin Frozr and upon installation, noticed that I need another power cable. I need an 8pin pcie to plug into my psu and a 6+2 to plug into the gpu. My issue is I'm in Canada and cannot find a single cable that I need. All I can find are extension cables that don't help me one bit.
Any help is appreciated.

 

[clutchc]

Unless you OC the card, you can use a 6-pin to 6+2-pin adapter like this: http://www.amazon.com/JacobsParts-6-pin-8-pin-Express-Converter/dp/B00JLTCMFC/ref=sr_1_2?ie=UTF8&qid=1449100183&sr=8-2&keywords=6+pin+to+8+pin+pci+express
Otherwise, we need to know the make/model of your PSU.