Hy Bill Marlow, firstly I must say how envious I am that you have that truck to work on and I'm extremely impressed with the work you have done so far! As I'm sure you are aware, is it not possible to have too many ground wires. Many of the fixes for today's vehicles with electrical gremlins involve "add ground wire". That said I would ground engine to frame, frame to cab, doors to cab, aluminum to steel, fenders to cab/frame, try not to put too many connections in the same place that will provide more paths to ground rather than funneling a lot through one connection. Connections that are clean down to bare metal when made and then coated to prevent corrosion are best. Good luck with your grounding project!
