I don't think the 2.6 (M103) has the magnetic clutch you want. But the 2.3s are probably more abundant especially in scrap yards. Radiator for the 2.6 is bigger. The sensors are a nightmare and changed through out the years. I think the biggest tipping point was about 1988 <= don't know for sure though

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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!