Take LOTS of pictures from all angles and all areas.
Tear it down , taking LOTS of notes as you take it apart for things to pay close attention to while it's apart.

I glass bead the bare frame to repaint it. Then dis-assemble the main cluster and switches as far down as reasonably required +/or your able to .

test everything while it's apart, if in doubt ask questions.

For gauge cluster faces, I highly recomend Premium Dash Decals

ps- you can build a frame out of 2x4's to make a stand that is so much easier than rolling it around on a workbench