carb recommendations

Get a Quickfuel Super street series 650cfm mechanical secondary carburetor. That's what I would run if it were me. I run a quickfuel super street series 680cfm vaccum secondary carb on my 360 magnum and I love it. Tuning is unlimited on these carbs.
you can change idle air bleeds, idle feed restrictors, power valve channel restrictors, High speed air bleeds, 4 corner idle circuit, And they are made of billiet aluminum. Definitely the best carburetor I have ever owned hands down. I say get a 650cfm because if its mostly a street car you will like the throttle response a 650 will provide on the street.