9c1 springs=2" rise over Impala
Regular Caprice springs will raise you 1" over stock Impala springs and 9C1 springs will raise you 2" over stock Impala springs. That was when they were new and all of the springs were low mileage. If your Impala has a ton of mileage and you swap in fresh springs, you may end up an inch higher as is.
1968 Camaro -my first car.
1995 Purple Pearl B4U Caprice
1995 Black/White 9C1 Caprice--NADACOP
1995 Purple Pearl L99 Caprice
2012 Alto Gray Metallic 9C1 Caprice--The HoDag-Solo axle back exhaust, improved racing OTR CAI intake.