Hey Geoff, there's a place called National Parts Depot, and they have a store/distribution warehouse right in Charlotte! They're "well received" as a good vendor to buy from on the Firebird forum I'm on. They'll also send you a free catalog, it's a pain trying to skim through the online one.
http://nationalpartsdepot.com/ Click on "Order your printed catalog."
Scroll down to the bottom of the page for the Charlotte address.