W126 Ride quality

[jammer]

Is there any way to restore the ride quality in the 126 to the way it used to be when new? Or better? My car rides just fine for its age but I’d like to make it better. I've heard of subframe kit advertized on some MB parts stores that supposed to improve the ride significantly. The dealer told me there isn’t such thing as a sub-frame kit for the 126 and that the only ride improvement that I can make is by replacing the shocks and/or the springs. Which bushings influence ride quality other than those associated with the shock absorbers?

Cheers