I can’t say the Carter carb won’t work. I’m just going by experience of owning a D24 previously and having parts cars. All had the Stromberg. Dodge fluid drive from 46-48 was the 3-speed with fluid coupling so any carb with a dash pot will work. Also no matter which carb you use the idle speed needs to be 450-500 rpm’s. To the original post, your car won’t shift automatically. The fluid drive allows you to start in third gear and not disengage the clutch when stopped. I normally drove mine like a conventional manual transmission but used the fluid coupling in town.