1971 riviera needs a rebuilt 7041242 or needing to be rebuilt Rochester let me know what you have and what you might be asking adamprat@hotmail.com
That is a 71 stage 1 carb number. I have one but it would be expensive. If I were you I would use a 7041540.
X2. I would only buy the correct number if you are restoring a correct car. Original Stage 1 Q-Jets command a premium price.
I have a 7041242 thats been sitting but ran well when removed service replacement carb so date code is off for a concours 350.00 and shipping