Martin - the ones that end in 32 are likely Cadillac, not good beginnings for a Chevy engine.
The 17059216 is from a 1979 Chevrolet. I don't know much about the later Q-Jets, as my area of expertise is 1974 and older.
My suggestions:
(1) Acquire a copy of the Q-Jet book written by Cliff Ruggles, absolutely REQUIRED READING for anyone planning to do a Q-Jet
(2) Look over the 17059216 for obvious defects. If this is a solid core, PROBABLY would be a good candidate. (Cliff has a lot of information on choosing a carb, and he likes the later castings).
EDIT: a bit more information. Disclaimer - Cliff is a good friend, so if you wish to take the following with a grain of salt, I understand. I have read a LOT of carburetor books since 1958! The book written by Cliff, in modern vernacular, is absolutely the most "user-friendly" carburetor book I have read to date. It does NOT require a college degree in either math or physics to understand the book. The enthusiast will find this book even more useful than the Rochester Carburetors book, written by Doug Roe, who was the chief engineer on the design of the Q-Jet. This book is also a good read.
Jon.
