Frank, it is not a mess if you can't find it on the Internet. Not everything is scanned-in and posted there freely for your convenience. Some of the Stovebolt members here have the old books, manuals and pamphlets.
Of the valves listed, the CV-609 is about the only easily obtainable NOS part (mostly from ebay). The differences in the valves listed is for type fittings (hose, metal pipe, screw-in etc.).
"Adding CFM to a truck will only help at engine speeds you don't want to use." "I found there was nothing to gain beyond 400 CFM."
