They did a brake booster for me years ago - for one of my old ratty Jensen Interceptors. More importantly; they did good!!
That's great to hear! Yes, they are predominantly a booster rebuild shop. My buddy (a 25 year diesel mechanic) took the booster from his rare Chevy 3/4 Ton truck and they did a great job. He referred me to them.
The booster on my daughter's Eagle was working, but since I had to pull it to remove the clutch master cylinder I figured I may as well get it rebuilt. It wasn't too expensive, and now one less thing to worry about. So they are rebuilding both for me.