This is a very old thread and I learned a LOT about making a 124 car handle and ride well since my posts some six years ago.

I have sinced ditched my Sportline bars, put the stock sway bar back on the front and a 500E bar in the back with stock springs and Bilstein HD's all around. For me this is the OPTIMUM. Try it, you'll like it! It gives me a nice ride but does the best of any combinations I tried in dialing out the understeer.

Stiffening the rear bar removes understeer while stiffening the front bar adds understeer.