I painted my Cuda's door jams, interior compartment, trunk, bottom side of car, engine compartment, and all the related parts apart and then put them back together. I even made up a plastic paint booth with box fans in my 2 car garage and sprayed 3 coats of ppg DBC base for a sealer to see if I had missed anythng. I let it dry for 2 weeks then blocked sanded it with 1500 and I'm glad I went this route as I found a small ding in a quarter panel and one on the top of a fender which would of been missed if I had not done this. I rented a body shops paint booth for a weekend to do the final outside spaying to keep dirt down. The box fans work good but the small filters will get dirty fast from the overspray even with HVLP guns. I have a couple of cheap HVLP guns for primer and small painted items and have even painted some big areas with these cheap gun with pretty good luck. I want a devilbiss finish line gun now but have not bought one yet.