I don't know if you can get a can of Rust-Oleum Professional Semi-Gloss black where you are in a quart can but that's what I'd use. No overspray BS to deal with and it goes on thick. Primer isn't needed unless you don't scratch your bumper which most Jeepers doing anything but going to the mall actually do. It gives a nice finish that wears pretty well, at least it has on all my steel. I'd use a foam roller to apply it. It's allot cheaper than spray because it covers so well even when you factor in the rollers or brushes. If you can't get the Rust-Oleum then look into tractor implement paint, same deal. Tractors and Jeeps have allot more in common then some Jeepers like to admit.