Chances are after 30 plus years, your original coil spring isolators are in pretty rough shape. Replace your cracked, old, worn out coil spring isolators for a fresh pair when installing new coils for a proper seat on the beams. Sold as a pair.

Note: These isolators have the most common, 2" center bore please check you coil perch dimensions before ordering. These would not be needed in a coil over shock application