Yes, you can get these decals and letter transfers with the exact text you want. Check out these decals from Antique Electronics. They're water-release decals and they're recreations of vintage decals, but that's cool and may suit your needs just perfectly. It would give your project a neat vintage/retro feel. And some don't look retro at all, so there's a pretty good assortment in each package.Also check out Parts Express. They have letter transfers, specializing in specific industries like "audio" or "test equipment". Sheets are available in black or white. Here's a link.
I still have a bunch of the Chart-Pak transfer sheets in various fonts, each with like 30 copies of the same letter. It's great for building prototypes, and I've used a bunch of 'em over the years. You can get that stuff at your favorite distributor, like Carlton-Bates or Hamilton-Avnet or whoever. But for one-off projects, I think the sheets from Antique Electronics and Parts Express are pretty handy.