Those edelbrocks are nice, out of the box performance, no fuss. Set your idle speed & go. That being said, it's hard to beat an ol' Q-jet if you can find someone who knows how to set them up & adjust them properly. A lot of junk guys haul off old motor homes & strip them down to scrap out around here & everyone I see I stop & buy the carb (or whole motor) if I can. I've got 4 off of 454's on the shelf now & they are excellent carbs once they've been setup right. Easy to rebuild too, just watch the little spring loaded balls in them when you pop 'em apart. Good luck which ever way you go. Jim.