I have two ford ecg carbs for sale. They are from a 1955 ford. They are a upgrade for a flathead. The original Holley 94 has a cfm rating of 180. These have a cfm rating of 210. They are a direct bolt on to a flathead. They have #57 jets with a 7.5 power valve. I am currently running one on my 53 Victoria. I did a comparison of the holley 94 and the ecg carbs. The holley 94 did a 0-40 in 10.92 seconds. The ecg did 0-40 in 9.35 seconds. A nice performance improvement. $180.00 each + $16.00 shipping