I plan to paint mine with PPG's DP50LF primer and spray DCC Concept single stage urethane, solar red. The car was originally body color everywhere underneath. Inside the wheel wells had an asphalt sort of product layered on top of the body color paint to protect from rock chipping and to deaden noise. I plan to use 3M "body Schutz" to replace that orignal coating.
If you are able to get the car high enough to work underneath it, you can spray using a Devilbis DeKups or 3M PPS paint system. The DeKups offers adapters to fit most major brand guns. DeKups disposable cup system These are bag lined cups that replace the gravity feed cup. It's supposed to cause the gravity fed gun to continue feeding in all positions. I haven't tried it upside down myself, but I'm told it works fine. 3M advertises their PPS system works all positions.
3M PPS System I have the DeKups system and I like it.
