Date registered: Jul 2004
Vehicle: 1991 500SEC 38,800 mi. 1987 560SEC Now 145K mi. (Spring 2017)
Location: Boston, MA area
Mentioned: 0 Post(s)
Quoted: 164 Post(s)
RE: 300 sdl 87 seat spring front driver
Do you have an MB dismantler fairly close by?
The L/F seat cushion on my non-MB (Volvo) was pretty much worn out & the foam had compressed after so many miles. I went to the scrap yard and was able to obtain a cushion replacement from the Right front of a newer similar car (thought it would have had less use).
It was easy to unplug the electrics, remove my drivers' seat & take it to the upholstery shop. There the leather was removed, cushion replaced, seat heat grids rewired etc, I was able to pick up the repaired seat the next morning & reinstall it.
My 2 cents, MBL
Just saw this: http://www.mbnz.org/forums/forums/thread-view.asp?tid=1185180&posts=2&fid=12
Might help you too.