Greetings.. I have a 71 diesel 309 d bus.. It has 66,000 miles on it and is in pretty good condition.. it runs but has an air leak in the fuel line coming from the tank.. I am looking for technical manuals on the mechanics of this bus.. I have a wiring diagram which is extremely helpful but am also looking for parts (original or after market). Like the window seals, the buzzers up front on the dash , and an air-conditioning unit for the top. plus some odds and ends.. looking for advice, ideas or just plain help.. feel free to contact me or email Zaharhazday@gmail.com thanks Zahar