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Try Don Howell at HAVECO in Tucson for the Herc nose - he had a bunch of them at one time. HAVECO@aol.com will get you through to him, and drop my name so he'll know how you got the lead.
If the Herc cockpit doesn't work out, I can always sell you 30' + of a DC-7 cockpit I'm trying to get rid of!
Neat project idea you have there - good luck with it.
There's one at the PHX-Mesa Gateway airport (formerly Williams AFB). It's on the east side and has been there for some time. Their web site is http://www.phxmesagateway.org/ You might try someone in the airport upper food chain and see if they might let you haul it off for them.