What's the number on that Quadrajet?
It is usually best to start with a Quadrajet that is close to you current engine, since they were all calibrated from the factory. Any Quadrajet can be modified to work on any engine, but takes a lot of work that could be avoided.
Quadrajets are great off road carbs due to jet location and fuel bowl.
Cliff Ruggles book is good and easy to understand for basic building. And Cliff is a great source for quality parts.