Justin:

I replaced the pad on the rear seat in my brother's car (W115.114) with a 3/8 sleeping bad mat and an eggcrate sleeping bag mat from K-Mart. The ones at WlaMart are thinner and cheaper (although they cost the same....)

Cut the thin mat to fit the spring top, then cut the eggcrate mat to fit at the rear but overlap about 3 or 4 inches on the front -- use the cover to figure out exactly. You will need to folt the front edge over and sew it down through some thin cardboard so that the front edge will be at the front of the cover -- the horsehair pad is about an inch and a half longer than the springs. I used heavy cotton chrochet thread and a "picking out" needle from the craft store -- an upholstery needle, curved or straight, would probably work better. This is a pain, but upholstery foam will not be firm enough to make the "lip" on the front edge.

Backrests won't really be doable, alas -- the back seat, maybe, the fronts no way. The shape of the upper part is formed by the pad, and I don't know of any way to duplicate the shape by hand.

I will take a look this week if I get a chance -- the seats at the yard were dark blue (MB262) MB tex, I think, a few minor tears, but the pads were fine. If they are still there, I will price them, I can always ship you the pads and covers,

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!