Looking at 2 new carbs for my DCSI 1983 - 503 Rotax, will be using the pulse line for the fuel pump. I have a huge choice of new Mikuni carbs - anyone know of the tech requirements for these carbs when attached to the 503 (CFM / Bore ?) I know the 582's have used them and the odd ultralight pilot has ditched the Bing and used them ...
