Besides trim package(i.e. interior material/Full Bucket seats vs bench/60-40 split/and exterior chrome/black out with door spears/rims & tires/etc.)
The Impala's and Caprices varied with suspension and brake packages
Impala/Caprice some 9c'1/Special Ordered Caprice's came with four wheel disc brakes
Impala/9c-1's/9c-6's all shared the "Heavy-Duty" suspension
9c-1's/9c-6's came with a "Heavy Duty" reinforced frame with extra(s) body mounts/bushings for extra dampening
9c-1's/9c-6's came with "heavy duty" shocks
Impala's got the Sport version of the "heavy duty" shocks
9c-1's/9c-6's came with taller than stock "heavy duty" springs
Impala's got the lower than stock "heavy duty" springs
9c-'s/9c-6's/Civi Caprices came standard with the 4.3L L-99 V-8 with single outlet exhuast in '94-'96 with the 5.7L LT-1 with dual exhaust being optional
Impala's came with the 5.7L LT-1 with dual exhuast standard with no other engine offers
That's the basics with many other options for the various levels/packages..
Alright. I've seen this type of thread as a sticky on other forums basically just there to make small talk about small upgrades, customizations, or whathaveyou. I'll start it off and we'll see where it goes.
This weekend I managed, with the help of a Hoosier INC brother (BuiltBySparky on here)...
My title reads caprice. Every thing else says impala...seats....logo...had it since 2012....it sat for three years in chicago weather...i drive it every day now bout 50 miles a day....love it....oil leak driving me crazy now....all over engine....no other problem....told to clean engine to find...