The Q-jet 4 bbl. is a good carb but I think for simplicity the way to go is the Edelbrock 600 CFM carb for the highway would be best. Most people do not understand the Rochester 4bbl. Q-jet Carb. when setting them up. If you have one that is already to go then yes use it if not get the Edelbrock if it's a 4bbl. and not 2bbl. you are using.
62Blue
Don