aftermarket stereo system in H3

[dchou1107]

I am putting in some stereo system from my previous car into the h3.

I am installing a kenwood kvt911dvd indash flip up tv along with front components and two amps plus 2 10" subs. is there an install kit for the H3 out yet? How about the issue with interfacing with the new GM 03 and above radios such as the onstar and the door chimes. The back is pretty small to put subs so i want to see if anyone has any options for the subs.