K-Frame - originally shiny gloss black as proven by paint hidden under one of the K-frame bolts on my A-body. But most people, me included, paint theirs semi-gloss, because full shiny gloss seems like too much shine. The shine would have faded soon enough anyway.

It is VERY important not to end up with the exact same shade of semi-gloss black in too many places. Different plants, different parts of the plants, and different sub contractors often used different shades of black. You might want to use the same black paint for the base coat with hardener, but you can follow up with top coats of different shades of rattle can black on different sub assemblies.

When the K-frame, alternator brackets, blower motor, coil, radiator, fan, pulleys, horns, master cylinder, etc. are all the same shade of black, it just doesn't look right to me.

That being said, I do think it is very likely that mostly all of the brackets and such on a car (and there are many) that were dip painted black could all be the same color and shade of black because there could have been just one dip tank vat in a plant. Examples are license plate bracket, parking light brackets, brackets on the front of the engine, grille brackets, splash shields, seat bases, jack base, jack mechanism, removeable frame cross member, parking brake bracket, etc.