If only the face is changed, then only the scaling of the meter face needs changing.
You can change the face scaling by finding the xxxx4339 chip (25594339?) in the speedo. This is a meter driver chip.
Cut the traces to pins 5 and 8. If you follow them, there is a capacitor across these pins too. Remember this point.
Solder a 50K pot across these pins. This will now allow you to adjust the full scale reading of the face. You can label the face just about anything you want. Adjust the pot so the needle reads correctly. Adjust it at the highest speed possible since it will increase the accuracy below that.
If the needle tends to jumps around or flutter at a stop, solder that cap across pins 5 and 8.
This means that us in Los Estados Unitos can take metric 180 kph faces and make them read in MPH. Looks factory. Blank out the 0-85 centers.
This method leaves the odo's reading correctly and doesn't require any changes to VSS gears (assuming they are the correct gears in the first place).
If you've done a trans swap and the VSS signals are way off, there is a simple circuit that can be made to make the speedo and odo's read correctly.
TK
[This message has been edited by terryk (edited 07-09-2001).]
on't blame me if your speedo blows up or something).
). Desiging the guage face is the worst part. 
