I’ve not seen much on the Chris Craft Specifically in the way of Service Manuals.
Ignition is very similar to Mercury Green Tops with the Bendix Scintilla Magneto
Waterpump is very similar to that vintage Mercury as well.
Carburetor is a Tillotson MD series; tons of information on those. They were used on various other brands.
Have you tried using the search on this site? You are a Member so it is a member benefit. Never know what might turn up. If you don’t know how to access the search just ask.