Holley Street Avenger 770 for 408?

I've ran a couple of Street avengers and both worked fine after I tuned them for the engine. You won't buy any carb and take it right out of the box and slap it on and it be calibrated perfect unless you get super lucky or buy a purpose built carb from a good carb builder that's specifically calibrated for your car. The choke is completely independent from the engine. All you do is hook up a B+ wire from the ignition switch and it does all the work. But the chokes on the carbs I had needed quite a bit of tweaking to make them work good.