51 IDA carburettor.  These are a reproduction of the Weber version. Come with trumpets, throttle lever arms, fuel unions as shown. Will accept all Weber jets and gaskets etc so tuneable for most engines. Comes with Chokes 37, A.vents 4.5, Mains 135, Airs 120, Em.tubes F7, Idles 70F10 Pumps 50, N.valve 200