Specifics and features: The kit is adjustable for approximately a 1" to 4" lift and is made from heavy gauge steel. It's zinc oxide coating, stainless steel bushings, rubber bushings and grade 5 bolts are designed to last. A very easy kit, most can have them installed within an hour. Rear shock extenders or longer shocks may be needed. Compatible with: 1963-1976 Dodge Dart 1971-1972 Dodge Demon 1961-1962 Dodge Lancer 1964-1969 Plymouth Barracuda 1970-1976 Plymouth Duster 1971-1976 Plymouth Scamp 1960-1976 Plymouth Valiant Package Include: 4× shackle plates 8× Rubber Bushings .