How many of you have run a double pumper carb with an automatic trans. How was the driveability with this combo. I was always told that vacuum secondary carbs should be used with an auto trans. I have been talking to a good carb man and he is saying to run the double pumper with my combo. He says there should be no problem with mileage etc if I drive it sensibly and can control my right foot. He says that the vacuum secondaries don't kick in until about 4500 rpm. He is suggesting an adjustable float 4150 Holley.