COPPER / BRASS RADIATOR. -USE RW0021-1 RADIATOR CAP. -OVERALL WIDTH: 19. -CORE WIDTH: 18. -OVERALL HEIGHT: 24. -OIL COOLER: 3/8 INVERTED FLARE FITTINGS ON 10″ CENTERS. -INLET: 1 1/2. How do I know my order was placed successfully?.