I believe it was a British company responsible for those conversions. MBspy used to have some imformation. First gen. hydro suspension?

If I had $ to burn, I'd buy it.

Mike

__________________
'90 300SE 298k
-300K and it gets put into retirement.
'80 300D 255k Purchased new by family in 1980.

Had a:
1973 220 (gas)
1980 300SD
1992 400E