A little late to the thread but I was able to restore the bezels on my gauges. these are off my 860. They aren't perfect, a little dinged up but they came out nice enough. I will see if I can find a part number on the tach too.

http://s1366.photobucket.com/user/M...g7_zps801eb0e0.jpg.html?sort=6&o=179


~ Billy
Old Dominion Stovebolt Society: Exotic Animal Division
1946 Chevrolet Cab Over Engine | In the Gallery | Video | More pictures
1959 GMC 860 | Pictures
1950 Chevrolet 3800 | Pictures
I've got a trailer and I'm not afraid to use it!