Holley 870 Strret Avenger Carb

I'm thinking about purchasing an Holley 870 street avenger carb for my 340 dart. It is a vac secondary carb with electric choke. I realize some will say it is to big but the factory had 800cfm thermoquads. I was wondering if anyone has used this carb before? The motor is fairly strong with a true 10.75 to 1, comp cam 240/246 .507/.510. eddy air gap, hooker super comps, 3400 stall dynamic 9.5 converter, 4.10 sure grip with m/t drag radials.