Genral Motors brake part number/ picture needed

[Wizard2467]

I have a 1965 GMC model 1002 truck with a Spicer 44 out of a 1964 GMC Model 1000 the identification. Does any one have a part information with a General Motors part numbers for a 1964 GMC model 1000 truck? I am in need of the part number for the HYD rear override spring the part group number is the same for 1965 GMC as 1964 GMC the GM part number should be in group number 4.0316 you may telephone me at (206)497-4511 I am in Tacoma, WA in the United States. It would also be great if I could get a picture of this part. Perhaps I can help you in return my GM parts illustration book goes from 1955 through 1966 years an old parts number change book I could help you with. Preferably please phone and email me. Directly form your email address to my email address. My email address is wizard24672000@yahoo.com
Sincerely, Steven Tacoma, WA