340 build - last time I "axe" these questions

Combo looks good, but for god sakes lose the Avenger. They are overpriced in my opinion and are calibrated ridiculously lean. Go for a Quick Fuel Super Street Carb. Its more money, but gives you features of a race carb as far as tuneability. The avenger is just a 3310 with a quick change secondary spring and a secondary metering block.