A good dash cap will look almost perfect if it has the right grain. A dash mat looks a little funky. I have one on the '79 and dont really like it.

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1981 300D 147k
1998 VW Jetta Tdi 320k
2001 Dodge Ram 2500 141k
1979 300D 234k (sold)
1984 300D "Astor" 262k(sold)
Mercedes How-To and Repair Pictorials
I love the smell of diesel smoke in my hair