You might find Mike Douglas (altairclone), I don't recall but thought he also used the same manufacturer as Grant Stockly for his accurate size but ATX model. If so he may have the right size panels still.
I have artwork for the front panel screen I use for the Altair 8800 Clone if you can't find anything else. It's very close to the original, but I must confess I went with the numeral "1" for 1's instead of the strait vertical L ("l") like MITS did. I planned on using the small L like MITS, but with the Helvertica font I have, the baseline and height of the small L differs from numerals, so it still didn't look like the original.
Mike
You might find Mike Douglas (altairclone), I don't recall but thought he also used the same manufacturer as Grant Stockly for his accurate size but ATX model. If so he may have the right size panels still.
I think you are better off having a new front panel Milled, powder coated and silk screened by a professional. Also have your case refinished. It may cost you, looking at the condition of the front panels out there and your spare case, going for a full restore may be the thing to do.
I would also suggest maybe doing a full restore on the rev0 electronics. A time consuming task but if you want an awesome working system that looks amazing. Why not.
I was showing off my fully restored Altair yesterday at the 40th annual Trenton Computer Festival and people were just floored looking at it and when I was able to cleanly load basic off of both cassette and paper tape it was very cool.
Cheers,
Corey
Isn't this Mike commenting just a few messages above?