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!