For 1973-'77 Chevelle, 1978-'87 G-Body, 1975-'79 Nova. These are the 450 lb. spring rate. This kit includes 2 double adjustable, front coil over shocks & 2 front springs with a 450 lb. spring rate, the spanner wrench and thrust bearing kit. These are easy to install with a bolt-in installation and are designed that the lower end bolts to the lower control arm and upper end sets in the original spring bucket. This allows for a longer and lighter spring for more energy which increases the weight transfer. These are durable springs/shocks and will last a while! Pick up a set today!