Im lookng for an alloy WI tank with a level sensor in. the only one I can find is a 3 litre jobby which isnt particularly big really

anyone know where I can get one from or got any pics?

I need an alloy cambelt cover too so would be nice if I could get them from the same place. Im really struggling to find any decent pics of them though loads of people sell them but dont actually have pics of them

someone help me please