In most cases, you won't need to rebuild everything in the front end. You should have a good MB Indy look at it and tell you what's actually wrong - ball joints, control arms, bushings, steering dampner, etc.
If you haven't replaced your shocks in the last 100K you should replace them at the same time - Bilstein Comforts and replace the steering dampner - those are the parts that absorb the shocks and protect your front end parts for a slow death.
Phil can probably get you the best prices on your parts and may be able to help you with diagrams of your front end. If he doesn't have diagrams, you can find exploded diagrams of the front end and the names of the parts by logging onto Performance Products.

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Houston, Texas
1984 300CD 235K miles, Elvira, one owner
1987 300TD 180K miles
1974 TR6 78K miles Sarah Jane, one owner
OBK #27