Going spare?
If they are not going to be needing these after the final 4 shuttle missions, maybe you could approach NASA and see if you could borrow one for the Vulture 1/ PARIS project. As an added bonus, the lighter load should enable it to go a bit further than normal too, so an opportunity presents itself for strapping a couple of politicians/ bankers to it and getting in the records for Britain's first manned spaceflight.