Switch the Speedo in the instrament cluster ? (Xantia)

[Stickyfinger]

As title, I would like to switch the speedo from KMPH to MPH in my LHD car.....(I have not pulled anything yet, it is to be a after hours job)

?...switch the speedo, possible ?
?...will the millage change ?
or forget it and put on an overlay ?

[citronut]

i think on digital mileometers the car will adopt the mileage of the replacement instrument

[Stickyfinger]

Site search did not but Google did
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