The early inside plug cars often used drip trays under the carburetors to keep any leaked gasoline away from the center of the engine blcok and the spark plugs. These drip trays were connected by short pieces of clear plastic tubing to an aluminum tubing manifold then to a longer piece of clear hose which led down the rear of the engine around the bell housing. These pieces are made by the original craftsmen in Italy and are perfect. There is a good photograph of one of the drip trays being fitted to an engine in the Ferrari factory on page 61 of the wonderful book Modena Racing Memories. Three Drip Trays and the Aluminum Tubing Manifold.