I used Duplicolor's Dark Canyon Red on my 54 engine and it's held up well. Several light coats and letting it dry completely before handling...I gave it 2 days...worked. I bought the paint at Autozone. It's not high heat paint but it has never peeled or flaked. Of course, I did not paint the exhaust manifold.
Attached is a picture taken when I installed the new engine a year or so ago. The supercharger has it's original paint so you can see how close it matches.
