If you are going to remove the entire dash (not just the guage cluster) here's what you need to do.
Disconnect evetything from the guages on the back side. You'll have to remove the lever for the cowel vent and the bracket for the steering wheel.
You might want to remove the two pieces of interior trim on each side of the windshield also.
Then there are two bolts on the under side of the dash, one on each lower corner, that get removed. Open the windshield and remove the clutch head screws along the lower edge of the window opening. I think there are about six of them.
The dash should now be loose. It hangs over a flange on the windshield opening so you need to lift it up over this flange. You might need to bump it up with your fist a time or two.
That's about it. It's not hard to do.
Oh just one more thought you might want to remove the steering wheel also.
Good luck
George