I have used rattle can Dupli-Color from auto parts stores (acrylic lacquer) over an auto primer base which is also acrylic lacquer.
For my major refin job I used an acrylic lacquer primer, then a layer of silver over the primer, then multiple layers of clear acrylic lacquer which came in a can from Stew-Mac, added tint, and shot with an auto detail gun. I used a pressure regulator and moisture trap in the output line from my air compressor to deliver clean air at a pressure the detail gun liked. I screwed together both the regulator and filter, then put snap=off quick disconnects on each end of the pair so I could remove them from the air line easily.
Sorry if this is elementary compared to what you guys use - just thought the Stew-Mac canned lacquer might be a handy thing to mention. I've tinted it red and also black with nice results, although shooting red requires at least three coats. Until I got the layers built up, it was pink....than finally red emerged.
Here's the resulting finish, after considerable wet sanding and polishing...the burst was shot with an air brush...first time I ever used one.