I just got a mat like that for my turbo 240. It reminds me of a toupee...trying cover that bald spot, but not fooling anybody. It will do for now though.

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine