Nisonger is someone I've used in the past for restoring gauges. They fixed a temp gauge that I had broken the capillary tube on. It was a long time ago and I think it cost as much as a new gauge. I also had them go over all my gauges before I put them in the car. That wasn't cheap either, but they were the only ones I knew could do it. [I just took a look at their website and they don't list an electronic speedo and they don't list prices for anything] I don't know if these guys are any cheaper for that sort of thing, but I've found their service to be pretty good and they say they are able to do silkscreening (for the dials). Some of my gauges don't really match: I have a temp gauge with a red pointer and an oil pressure gauge with slightly different markings. Someday when I have more money than brains (oops! I might have that already!
), I might get them silkscreened to match, but for now...