For speedometer/gauge/clock restoration I've had good luck with APT Instruments in Minneapolis, they've done some amazing restoration work for me. I once brought them a motorcycle speedo/tach combination gauge that was literally a pile of loose parts in a box, and they put it back together better than NOS quality. I also had them rebuild a Pontiac factory tach and convert a '65GP clock to quartz movement with good results. Their website is
http://www.gaugeguys.com/
I had a dash bezel redone by Mr. G's and was happy with their work. I've heard other people have had problems with his service, but everything worked ok for me.