67 S engine colors...help

Am doing some clean-up on my 67 S and keep getting deeper and deeper into cleaning (just got a new steam cleaner :) Anyway, I have all the tin and other items at the sandblasters getting ready for some cleaning and respray. My question for colors are the fan strap ( I recall black although on my later cars its gold cad plating), fan surround and fan (are they protected by maybe cad plateing??). And the heatexchangers are to be a grey along with the muffler (there are signs of grey for a match on them).

Appreciate any advice here ...or pictures are even better.

Thanks

The fan strap is black, fan and fan surround are unplated aluminum. My heater boxes were always a "rust" color (lol), but I believe I recall some black paint on the sheet steel around the exhaust tubes.

Thanks. Those are the colors that I remember as well...although I was thinking that the fan et all should have had some sort of protection coating??? If not, maybe a clear coat to make cleaning easier.