I used the Ruggles book and one of his high end rebuild kits (includes more parts) to rebuild a post-76 Quadrajet. The only issue I found was that his book covers so much material on both standard rebuild and performance additions that I was doing a lot of flipping back and forth in the book. I wanted to get a fairly stock carburetor, but also address some performance changes as part of the rebuild.
For example, I removed and tapped the plug for the APT screw so that I could adjust it after I put the carb together. However, it ran well with the stock setting, so I left it that way.
I found the carburetor on an '86 Chevy truck, since they used the non-electronic, non-electric carbs longer on the trucks than on the cars.