Removing the lower control arm to have the bushings pressed out and new ones pressed in at a local shop is easy. I lowered the arm with a floor jack once all the bolt/nuts below mentioned were disconected. The spring is then easily is removed in a uncompressed state. The spring sits nicely in its perch as you hinge out the lower arm with the floor jack. Just disconnect the lower shock fastner, stabiliser link (need a torx bit), upper control arm ball joint, and lower ball joint. Once the spring is out you just unbolt the two 22mm nut/bolts where the control arm is affixed to the frame. Becareful, I guess you could hurt yourself if you don't think or have limited experience. I doubt any experienced tech would hook up a spring compressor to remove the front coil spring but maybe I'm wrong

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1972 450SL
1982 300D Turbo