I have a few burned out and it's just getting to the point where it's annoying me now.  So I'm going to replace them...only one problem.
I have no idea what the size/sizes and part numbers are.  I guess i found a site that says the are called a "74" size.  Are all the lights in the dash size "74"

I plan to replace them all with L.E.D.'s.  My friend did this in his '67 bug and they look amazing and are so much more brighter than the old "bulb" types.