"Do you think the GT would qualify?"
Even if it DID, and you supplied the extra 4.5 qts of oil, would you wanna see 'em put "Motorcraft premium synthetic BLEND oil" in your GT? And then there's the prospect of likely damage to the car DURING the oil change due to ignorance of the specifics involved.
But, why are we even addressing the possibilities when YOU WERE JUST BEING A SMART ALEC ANYWAY, SAM?! :slap