From my 88GT, all gauges work fine. The fuel/temp gauge was replaced by the PO but I have the originals too. Not sure why they were replaced though.
Asking $95 shipped to the lower 48. Not sure how much extra it would be to go to Canada but if you would like to check, my zip code is 55014.
Edit to add: I tested the original fuel and temp gauges and it seems the temp gauge is reading quite a bit lower than it should at a given resistance. The fuel gauge works fine.
[This message has been edited by seajai (edited 03-22-2013).]