W123

617 Turbo Diesel Injector Part Numbers/Interchangability

I have 5 each of these injectors:

KCA30S46

KCA30S35/4

KCA30SD27/4 (this one had a plastic cover with the number NA32X on it)

Are they interchangeable?

Will the same nozzles work in all?

The cars in question are a 82 300TD Turbo and a 84 300D Turbo. I want to rebuild the injectors and want to make sure these housings can work with the nozzles for the cars. Thank you

Chassis Model Number

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1983 300D electronic speedometer conversion?

I replaced a failing differential in a 1983 300D which had a 3.07/1 final drive ratio with a w126 differential with a 2.47/1 final drive ratio. RUNS GREAT!!! Of course, what the tranny-driven mechanical speedometer-odometer now registers is about 80% of what the actual speed and mileage are. I would like the instruments to reflect actual speed and mileage.

In the original vehicle, an electrical speed sensing unit on the differential connects to the instrument cluster.

Chassis Model Number

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