I was just in the big Summit store here in NE Ohio, and there was not a single Quadrajet on display! It was basically just a full aisle of various Holley carb/EFI products, and some Edelbrocks.
I wonder if this is due to 1) the Boomer Corvette/Buick/Olds/Pontiac owners have died off, or 2) enough people realized that those "rebuilt" Qjets sold by Summit/JEGS are hot garbage.
BTW, I moved all the copies of Cliff's book to the "automotive fiction" shelf. LOL