I once owned a 91 W250 CTD which I installed the Skyjacker 6" springs in the front. I had to utilize a combination of a 4" (Skyjacker) drop pitman arm, and a 2" (Superlift)steering arm spacer block to keep the drag link level. I also had to install an adjustable drag link (Superlift) to keep the steering wheel centered. I discovered that if the drag link is not [nearly] level [between the pitman arm and the steering arm] you will not have full travel between the steering stop bolts. You will also find that the double universal [cardan] joint in the front drive shaft will not flex far enough to connect the stock drive shaft to the front yoke. I ended up having a custom front drive shaft fabricated to accomodate the extreme drive shaft angle to the front axle.