Here are images of the various parts to help you.  Click on the images for bigger pictures.  Thanks to Steve Brandt for the pictures,  Main casing Should be finished in a matt not a gloss finish, Oiler Should not be polished like this one, but should be a natural casting finish.  Carburettor This one has a transparent float bowl, not common.  Carb is Holley 1904. For carb details see more here.