The one at Pima would probably be the starting point if such a thing were possible.
In fact, back in the 70's when the aircraft was still in Fort Worth, a group was trying to do just that. They had gotten all six engines running, though not at the same time. (They had only one set of engine instruments.) At the time, the cockpit looked like this:

The effort was abandoned in the late 70's when the USAF put its foot down and said that the aircraft would not fly again under any circumstances. Work shifted to preservation. The aircraft was disassembled, moved to another outdoor location, reassembled, disassembled again, and moved indoors in the late 80's where volunteers restored the interior:
The story is told here:
http://www.prowebfortworth.com/
Sadly, local efforts to raise money for an indoor display of the entire airplane never gained enough traction, and the USAF moved it to Pima in 2006.
It looks like they're doing right by the grand old lady:
http://www.pimaair.org/project.php?rid=1 But I do wish they'd acknowledge the heroic work of the Texas crews who put in so much effort over so many years.