I had Carmen Faso build up this carb for my 64 Wildcat 4 speed car, with 401 engine. He tweeked and played a little with it, and I could not tell you now what was done. He also added an electric choke to the carb. I had the carb on the car for most of the spring and summer, untill it was time for the BCA Nationals, and it came off. The car ran great with it. I drained it and put it on the shelf. Car has been sold, and the carb is still here. 125.00 plus shipping fees OBO