Exhaust manifold paint

Looking for paint to use on my exhaust manifolds. Criteria are inexpensive, spray can, and descent looks. For those that have used Calyx, how often do you have to touch it up. I also have access to the powder coat oven at work, could a person paint the manifolds then run them through the oven (thinking it's 400 degrees or so)to bake the paint? I have never had much luck with high temp grill paints, but it could have been prep issues.