Might search for all W124s. Much in common.

OM606 engine has it's own quirks, mainly the fuel system, and then there are things like a cooling water based engine oil heater that snakes around in the oil pan.

They are nice cars once put right. Much nicer than the W123. I know, Ive owned many examples of both....

If I were starting from scratch, I'd be looking at the W211 diesels. As much of a jump from the W124 as the W124 was from the W123.

Jim

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14 E250 BlueTEC black. 45k miles
95 E320 Cabriolet Emerald green 66k miles
94 E320 Cabriolet Emerald green 152k miles
85 300TD 4 spd man, euro bumpers and lights, 15" Pentas dark blue 274k miles