6-PIN GPU Connector Question

I want to not use 4-pin molexes to 6 pin connectors anymore, my PSU is partially modular and i was wondering If any of you guys know where I can find a 6-pin (To go into the PSU) that splits into 2 6-pins that will plug into my GPU, or anything close to this.

They should be sold on ebay like pci 6 pin y-splitters, but I don't know what that would do to the PSU in the sense of if it can pull enough voltage from one connector.

if you're PSU didn't come with one then you can't get one, you'll need a new PSU, and molex connectors aren't that bad, I had a 5850 with a +1Ghz overclock on it 24/7 bitcoin stable using 2 molex connectors

Thanks for the help, I was planning on getting a new PSU regardless to run 660ti's in SLI later on,