I used a common JGA DeVilbiss spray gun, spraying the brown metallic, spraying the complete interior with no over-spray problems...I also used clear too...No metallic sag...I did have an exhaust fan running...You do not need hvlp...Just cut Your air pressure down...Bill B.

1952 Chevy 3104 Shortbed 5-window
Remember; Politicians and diapers both need to be changed
often, and for the same reason.....