I am in the process of getting my '72 Nova going again. I was not happy with the way it idled and ran before with a 750 Edelbrock carb. I am looking at going with a 750 Holley this time around. Since the car has a healthy 408 sb and an Th350 trans I will be going with a vacuum secondary carb. Any feedback on which might be better would be appreciated. I also want the simplest carb to adjust and maintain.