The Edelbrock AVS2 1906 (650 CFM) would do well for you. With its annular boosters you'll get superior throttle response. I too, like you, tried the earlier model without success. If you go with a 1906 I encourage you to also get the tuning kit so you can zero in on just what the engine wants.
I second the AVS2. I would say that it's the best street carb out there. Also agree with the tuning kit. They're very easy carbs and the throttle response is great. I had an issue with boiling fuel, but a spacer cured that 100%.