In GA, it depends on where the car is registered. If it is in the metro Atlanta area it will need to pass some level of emissions. If the car is registered outside this area, or is over 25 years old, no testing is required.
A "kit car" is based on the motor configuration, and a simple test is specified. My car has not passed yet. Webers are NOT designed to be clean, but to make POWER! I am currently looking into conversion to FI to meet these requirements.