hp proliant – Prloliant DL380 G6 GPU installation

I have a Proliant DL380 G6 and I want to build a graphics card on it. To be specific, it's an Asus GTX 960. The card When I want to integrate it now, I'm pretty sure I need a PCI slot expansion card, which one would you recommend? And also, can I plug the card into the SAS A or B connector on the motherboard? If not, how will I get power to the card? Below I publish a photo of my server. The server