Somewhere in the archives is a thread about engine paints and there were actual Dupont mix codes you could take to the store to get a quantity mixed be it in a can or an aerosol.

There was also some discussion about there being a difference between "Hemi Orange" and the actual engine paint color not actually being the same color at all technically speaking.

Whether that is relevant to your Max Wedge engine color or not... shruggy

Kevin