This last image is a stock shortblock, just to give you something to compare to.
This is the build sheet.
That is a ceramic coat on the tops and dry-film on the sides.Cast crank and powder metal rods stock hmm...
Nice work on your worked over short blocks! I was perusing your one gallery with all the various engine pics and I saw some photos of a piston coated with something dull grey, was that some sort of molly coat or ceramic?