It's this one.. https://www.mediafire.com/file/wwkd...40_60_Truck_Overhaul_Supplement.pdf/file

But get this.. it has complete instructions for teardown and reassembly of the unit, with frequent references to 'torque to specifications.' However at the end of the manual *it doesn't have any of the internal component torque specs like ring gear to housing, cap bolt, etc!! computerdeath

So I'm going through each additional one to find the book with the complete torque specs. Grrrr...

1965 C60 school bus | 1967 GMC 6500 school bus