Finishes, bolts, and clips - oh, my! ;-)

That sounds like badly oxidized (from age and heat) gold dichromate, but the NOS ones I've seen were all zinc coated.  And the MPC entry calls for zincplate, all the way back to 1970.

How about any input on the type of clips that are used to hold the wiring harness. mine are sheet metal that go under the valve cover bolts. Anyone have the same or Different?original specs.

If you mean a thin metal "fishhook" piece, with about half its length dipped in rubber, that's the one.  And, should anyone here be that fussy, I have a very few of these NOS.  They're not flawless, but this cheap part wasn't meant to have a diamond-like finish.   ;-)
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Mr F