I agree with William. When I did the front end on my 190E it was actually *cheaper* to buy new control arms (with bushings and ball joints already installed) than it was to buy the parts and have them pressed in to my old control arms -- even with me doing the removal and re-install of the control arms.
IMPORTANT: Definately heed the warnings about the springs on these cars. It is a safe job with the proper tool, but it can be extremely dangerous without. I, literally, had a brush with death when one of my spring compressors (not the right tool!) let loose and grazed my head. I got off easy with three stitches and a black eye. Imagine what *could* have happened! Frankly, I'd perfer not to.
So my 2-cents: tackle the job if you feel comfortable with it. But please benefit from my *incredibly stupid" mistake -- and be safe.
BTW: With the new bushings, the ride is like "buttah"!
'92 Mercedes 190E/2.3 (247K miles/my daily driver)
'93 Volvo 940 Turbo Wagon (263K miles/a family truckster with spunk)
'99 Kawasaki Concours
'85 Jeep CJ-7 w/ Fisher plow (226K miles)'93 Volvo 940 Turbo Wagon
'53 Willys-Overland Pickup
'85 Honda 750F Interceptor
'93 Nissan Quest
'89 Toyota Camry Wagon
'89 Dodge Raider
'81 Honda CB 750F Super Sport
'88 Toyota Celica
'95 Toyota Tacoma
'74 Honda CB 550F