By far one of the cleanest and authentic conversions I've seen to date. Kudos to the dedication of fitting OEM parts. Did you all notice that even the paint is virtually spot on?
As for rear three quarter tinted glass called privacy glass in Japan, this was an option for a high spec car. Usually lumped in with other options like air bags and ABS and stereo. Cars without ABS and airbags tend not to have it.
I assume most members here with grey EK9 from dealers have EK9s with full options.