Changing the mileage ?

[Vince70]

I wonder if someone could help I own a very early 1994/95 poverty spec 1.6 A4 which has low mileage 64000 and I've noticed the rev counter is sticking and the analogue clock only works when the is ignition on.

So today I bought a cheap set of clocks which are off an early 1.8 (immobiliser 1) so I haven't got to worry about the immobiliser being built into the cluster as the car is an early one.

The problem will be the mileage I doubt the mileage will be as low on the new set of clocks,
is there any cheap way of changing the mileage or could I take the speedo out of my old cluster and refit in the new cluster, or could I be lucky and find that the mileage is stored on the ECU rather than the clocks on an early A4.