Hi;
I had a similar problem and so have many others. At 225 k my speedometer stopped working but the odometer was still going round (distance). The speedometer is quite a complex electronic unit so the easy answer is to buy some secondhand clocks and swap over. I got a used instrument panel, checked all the bulbs and swaped them over in less than an hour.
Cheers
Carl
Carl Bigley, June 2009