Eric, What would a 4519 and a 5271 (on the same carb) be from ? Some guy needed the center section a few years ago and I sold it to him but still have the metering blocks and bowls. The only thing I remember about the center section was that small pipe that comes out at an angle near the top and the Eelco style gears that worked the primary and secondary butterflies... I wish I had kept it, I never did look at the numbers.
Tommy
