These olives specifically fit the '80 Fuel Injected Shadows and Wraiths.  They do not fit most Shadows.  The large olive is UR22138 and the small olive is UR22107.  These are made from solid 304 stainless which is very resistant to thermal cycling and fatigue cracking.  Please make sure these part numbers are applicable to your car.  They are priced invidually.  There are two large olives and 1 small olive per car.