Just checked Eibach's site. They only have one kit for the 124 chassis, and it is 6-cylinder only. 28mm front, 17mm rear. That's a bummer, I think the 124 needs a little larger rear bar. Especially with the "stiffer" Eibach front at 28mm end to end, I'd think an 18mm or even 19mm rear would be nice. Oh well... too bad they don't sell the front bar separately! their front with an 18mm rear would be sweet.