So my 4dr is a very much budget build like no other if i can save 10cents on something i go for it.But anyways this year i wont have enough to get it painted. So i am trying to find something to use that wont rust it is a daily driver right now that's very cheap. Also have never used a spray gun am a master at spray can but never a real paint gun. Any tips on anything? Step by steps or good spray paint to use if it will hood against elements. Was thinking of rustOleum gray paint?