This is a 4.2.2 (JDQ39) Stock Rom made from Factory Image (Mantaray) released by Google on 02/14/13.
Both Deodexed and Odexed versions are available. Both of them are rooted with unsecured boot with init.d support and includes busybox.
Wipe cache/dalvik. Flash via CWM or TWRP. Your data will be preserved.
Deodexed: Link 1
Odexed: Link 1
Please don't forget to hit Thanks and give proper credit when/if you decide to use this as a base.