I have Bilstein HD shocks on my 85 300D. I love them, a bit stiff but they make the car feel much more like a suspension in a modern car.

I also have a hitch on my 85, when pulling heavy trailers the rear end feels great with the HD shocks.

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1985 300TD Turbo Euro-wagon
1979 280CE 225,200 miles
1985 300D Turbo 264,000 miles
1976 240D 190,000 miles
1979 300TD 220,000

GONE but not forgotten
1976 300D 195,300 miles
1983 300D Turbo 175,000 miles

http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg