Regarding manuals, carb and trans linkage unique to the COE are actually pretty well covered. In the Chevrolet Truck Shop Manual 1948-51, look on page 6-65 for the beginning of the updraft carb section. This manual is online at Old Online Chevy Manuals, a site run by Keith Hardy. Regarding trans linkage and many other things get a copy of the 1947-1954 Truck Factory Assembly Manual (often referred to as FAM). For example Sect. 7 Sheet 2.03 is a diagram showing the linkage I photographed above. As you look through the FAM, look on the lower right of each sheet for the model. You are looking for Model 5000, since you either have a 5100 or 5700. Lots of info here about pedal mounting, etc, that is unique to the COE. Good luck, Kent