15-03-2019, 09:20 AM
Another option is to use a cast aluminium manifold for a downdraft carburettor but turned upside down. John Barlow sells them for a bout £40 and they come with a double flange for the carburettor so you can just cut off the appropriate bits depending on the orientation of the carb. With a bit of fettling it looks quite nice and works well.