Block should be dark Corporate Blue (I like Plasticoat for a rattle can for the 66 color)
How exact do you want the details? I'm betting your not looking for exact concours guidlines
In general the engine is painted as a unit (long block plus intake, oil pan, water pump) for this year and model - exhaust, carb spacer and bellhousing were in place but few do it this way because is looks sloppy and leaves some areas unpainted)
Pulleys, PS and Alt brackets were semi-gloss black (slightly glossier (S?) than the engine compartment)
PS pump color depended on which maker built the pump (often a factory or dealer installed question)
C Turner posted a site a couple of days ago with the older version of the MCA judging rules a good start.
As you go through the process you can just post the item by item request here and everyone will try and help out