There has been lots of discussion over the years about finding a correct shade of Hemi orange engine paint.
Well the good news is I have found a source.
Bill Hirsch of Hirsch Auto supplies restoration materials for some of the best restored classic cars in the US.
http://www.hirschauto.com/
I ordered a Quart of brush-on enamel and, although it took almost 7 weeks to get here by surface mail, it just arrived this morning.
Check out the photos I just took comparing it to my known good sample of correct hemi orange. It looks just a tiny fraction lighter but I think this is because it is still wet. I will take some more photos when the engine is painted.