I've had two smaller compressors in series together for the tank volume when working sanders etc that use lots of air. I use a Devillbiss HVLP spray gun through a water separator. The sealer and primers are SPI (Southern Polyurethane Inc) epoxies. The clear is also SPI. The base coat is Dupont Chromobase. Various fillers such as Duraglass for the fiberglass parts, differing grades of fillers depending on what your doing, building, leveling, etc.