I was thinking of getting these springs for the Impala:
Moog 7170
Inside Diameter 4.000
Bar Diameter .812
Install Height 10.50
Load 1815
Spring Rate 845
Free Height 12.60
Should be around a 1" drop.
And maybe later for the rear:
80108, 5415, 5041, 8537, 5387,6381
Rates range from 169-198
All should be from 1/2"-1" drop.
Any thoughts?