my Stock was 1.40.401.2 ..then I upgraded to 1.40.721.2 and it got "Google Map" built in inside.. the previous one doesn't...
Then I stripped down the Stock ROM, remove the Manila2D, OPERA, Office, JBLEND, ZIP... etc to my liking... and Flash it using the Kitchen...
and I got Vanilla Stock ROM.. (ROM: 128MB Free & RAM: 81MB Free)
Phone: Nexus 4 (daily use), Gnex (for testing)
Tablet: Nexus 7