Google navigation is now working on Enomther’s TheOfficial AOSP ROM and here’s a few screen shots to prove it.  So far so good, although the voice wasn’t very clear on my test.  I’ll playing some more tomorrow and give more feedback.  For now, you can check out the XDA forums to see the progress on other ROM’s and stay tuned for Enomther’s Official TheOfficial Expansion pack update including Google navigation.