I'm not sure they're called comfort springs, but my car has the HD Shocks and I assume the "not sport" springs. I say this because my car sits higher than a C280 with the sports setup (by about 3/4"). I need new shocks and was wondering if I can just change to shocks to get a sportier ride or if I have to have the springs changed as well? Will I get some kind of weird ride with the mixed combination of shocks and springs? Anyone who tried this has their experience to share? Thanks. Also will arbitrarily using the thinner shims cause problems. I know the whole "technical" formula of "if you have this option + this option, etc use this shim which causes a higher ride" but was wondering if that's really some hard and fast rule.