The 26 Amps requirement is for the entire system.
As to your question: Just combine two regular molex connectors into the splitter provided with your GPU. If you've got a dedicated PCI-E plug on your PSU, just use that instead and see if it works. Worst case scenario is that it doesn't boot up because there isn't another power.
Quote:
Would my gpu still run without enough amps?
Doubtful. Most likely it would just refuse to boot and give you the
one long beep + three short beeps error code.