What brand and where can i get backup camera and dvd playback for my 03 gs 430?

 

if you are talking about an aftermarket deck, i would recommend the any of the eclipse AVN series or pioneer D1, D2 or Z1. they both have the option of adding back-up cameras. the backup cameras range from 175-250, but i wired a cheaper backup camera to my eclipse unit(thanks to info from a guy on here) and saved a lot not having to use the eclipse BEC backup cameras.
If you use the search function, you will come across all these units as most members have them in their cars.(even with pictures so you know what the outcome would look like).
good luck