if the sumps suit, and the clutch hard/soft line is in the rightspot, then there's no reason not to except for the added weight that an 18RC gives you and the potential hassle of adjusting the mounts on the cross member. If you could score a 22RE it would make more sense (sort of) as you'd use less petrol and get more torque.
note: you'd need the bellhousing from the 18R as well. Am assuming the gearbox is a W50?
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