It’s a very presentable engine bay, but quite a few details incorrect. Here’s what I see:
-Should not have white/red tag on battery
-The long tube braces, the bracket on the battery side is turned the wrong way. It should be flipped over and the tube end placed underneath. Both of the brackets that attach to the car should be the same black as the engine bay since they were attached when the engine bay painted. Fasteners should be phosphate/oil. There is a L/R side tube brace, one is marked with an ‘L’ on the end.
-Remove all the ‘X’ marks throughout the car, not a single one of them is correct.
-Remove the yellow paint marks from the fenders, let us know the assembly plant your car was built to let you know which ones should be there. Guessing San Jose since the breather tube is there on air cleaner.
-Remove the caution-fan decal.
-Horn fasteners should be phosphate/oil
-Fender bolts should be phosphate/oil
-The apron to cowl braces should be black, fasteners phosphate/oil
-Remove the paint daub/marks on the shock caps
-Looks like the engine bay is too glossy.
-Dipstick handle should be black like engine
-Incorrect radiator cap, remove the ‘OK’ stamp
-Fan shroud brackets should be black
-Red tag on alternator?
-Alternator spacer incorrect finish for year, should be darkened color.
-Grille color is too light
-Petronix?
-Coil should be mounted on front of RH cylinder head, incorrect coil, not yellow top.
-Incorrect spark plug wires
-Finish on exhaust manifolds too light
-’66 style windshield washer bag, should be screw top
-Incorrect distributor, no vacuum advance
There should be ‘sealant’ applied to the firewall around where items pass through or attach. This is to close up the opening to keep the water/air out. This usually has the appearance of undercoating.
As you mentioned, A/C system is all wrong, lines, compressor, etc… You would need a cast iron Tecumseh compressor with proper brackets and hoses.