Try this guy:
I have lots, LOTS of bus parts, and advice
My name is Patrick young. I have owned about 100 Gilligs, Crowns, Fords, Waynes, Internationals, Thomases, I've lost count. Also 5 fire trucks, vehicles raning from 1954 Crown to 1990 Crown. All types of engines, even gas Hall Scotts.
I have a huge inventory of parts, and a good mental inventory and network of folks to help rare parts get found, how to get repairs done cheaply, I been doing this stuff for 17 years.
You need a part, or some advice, just give me a ring.
Patrick Young
Bus King of the Great SouthWest
http://www.fresnoalliance.com/wheelchairproject
(559) 251-3814 or (559) 244-1042