Dont spend a lot for the GPS~!100000% not worth it!!
you know, you can buy a universal Andriod system for your car from Ebay
cost under 400USD, free GPS update
Only spent 400USD for my car audio system.
Boss speakers and Amp cost me 248USD, you can buy a combo form Ebay.
And an indash DVD player only cost me 150USD, very good deal~!