Here is a picture of the dual updraft setup that we run on our roadster. The manifold is a Trojan cast iron unit that was produced back in the day and maybe up until the early fifties. I'm running model B carbs with original jets. I would have posted pics the other day but I'm not real swoft at posting pictures. I had to wait for help. If the picture posts ok I will post more pictures of the Uniflo set up on our homemade speedster.