CAST ALUMINUM TOWER has a universal mount, internal oil baffles and three 3/8" NPT outlets for braided hose fittings.
STEEL TOWER has a chrome finish and no inner baffles. Features an adjustable steel mounting bracket and three 1/2" vent tubes for use with rubber slip-on hose.
Note: Legal in California only for racing vehicles which may never be used, registered, or licensed for use upon a highway. See knfilters.com for CARB status on each part for a specific vehicle.