I'm considering respraying my engine tin while my engine's out of the car. Is there an "official" concours-correct paint or will any semi gloss black paint do? I figure if I'm going to do it, I should do it right.

Thanks,
Konrad

The Wurth Satin Trim paint is the closest I found to the factory paint. I'm sure there are others. It's slightly glossier than the factory black, but has the correct color tone. The Wurth and factory paint are not a pure black like the high temp VHT paints.

I've used the Wurth satin black for other applications through the years, and it is good. When I redid my tins in '79 I stripped them to bare & used Rustoleum primer & stain black paint. They were gorgeous. But, through the years I polished them & they have become too glossy (though they look great). So, I'd recommend, whatever you use, never "polish" them. Wax only.
Just be certain that you strip the parts to bare metal, use prep solve and a clean environment to paint.