Well their were many more 350SDL's, and not to mention they used the 3.5L 603 up until 1995 in the S350D. So actualy the engine itself is pretty common as far as MB's go.

Part of the downside of having a somewhat rare car is that locating used engines is hard. But these were not cheap cars new and were never intended to be cheap cars.

I dislike white cars, to plain.

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1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200