80 MGB w/AC need fan shroud

I have a 1980 MGB with air conditioning. Before the AC was added there was no engine fan and two electric pusher fans in front of the radiator. When the codenser was added, one electric fan was removed and the engine fan was installed with a plastic shroud. My shroud is broken and I am trying to find another one. Does anyone know where I can find one? I've allready been searching everywhere with no luck.