The Moroso performance products is one of the worlds most respected suppliers of automotive equipment for racing and street performance applications. Moroso manufactures over 3000 products, from Oil Pans and Oiling Systems, to Ignition Wire, Ignition Components, Valve Covers, Fuel System Equipment, Air Cleaners, Hard Core Racing Tools, Chassis and Suspension Equipment, Marine Performance Engines and numerous other performance parts.Features. Designed For Drag Racing Where Maximum Weight Transfer Is Needed. Trick Front Springs Are Tall, Small Wire Diameter Coil Springs That Hold A Great Amount Of Stored Energy For Instant Weight Transfer. Replaces Stock OEM Springs With No Modifications Required. Spring Rate - 241 Pounds Per in.Applicaions. 1964-1967 Buick Skylark. 1955-1968 Chevrolet. 1964-1967 Oldsmobile 442. 1964-1967 Pontiac