In my little heap of parts I found a spare instrument panel. It is nearly identical to the one in my truck, but not as corroded.
I may end up replacing the existing panel with this one.
But first I would need to know what year this panel was from: for instance the water temp gauge appears to be electrically operated, as opposed to mechanical cap tube that's currently in the truck (and not working properly). If I can use this found gauge, then what is needed to make this water temp gauge work as it should?
Here's some pics of both panels (labelled one is the found panel):
http://s525.photobucket.com/user/my_pics48/slideshow/truck%20Gauge%20panel