The high temp engine paint is a good choose,a long with header paint, the new disc brake caliper paints in the rattle cans. As been said the big box auto parts stores.
Or here
http://www.caswellplating.com/vht/index.html
They have all the info on the new high temp coating even the Ceramic in the rattle cans. they also ship world wide or have outlets in other places.
http://www.eastwood.com/underhood-engine/engine-paints.html
Here is another and if you like shooting it yourself they have it in regular cans
The only thing I will say as with all types of coatings, whether paint or patina's is the single most important thing you have to do is the prep work, Clean, dry, oil free and if you don't use a primer put a couple of extra coats of the top coat on. To put logo's or lettering on. Practice with low tack masking tape and an exato knife #11 style blade, on sheet card board. Paint is cheap you can use any cheap rattle can paint to practice with.
Another tip if you want a light color on top of a dark color spray a gray down first as it will cover the dark colors with less coat and the light top color will also need less coats.
The other tip is DON'T leave the masking tape out in the direct sunlight to dry, or leave it on to long over 24 hours ot the directions maximum time.
To mask large area's, use tape to outline and then plastic wrap taped to the tape or the cheap plastic drop clothes.
The second most important thing after cleaning and prep work is Waiting for the coats to dry before applying either another one, or a logo etc.
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