Shock Kit: Rear 70-81 F Coil Over Heavy Duty PairSuited for heavy duty use where pump ups are not viable but a heavy load rear coil spring on the SHOCK will help. Don't use with lowered rear leaf rear ends unless you have it just too low.. as this may raise the car slightly. Alternatively if its sagging.. this is a cheaper alternative to a full leaf spring replacement. This is a pair set. Delivery is Additional on all Struts & Shocks due to weight and cubic boxing care needed. Freight calculated