On my 08 GTS I had the factory nav system, I installed a aftermarket 4 channel amp. Wired it as a 2 channel mids and highs and 2 channels to the subs sounded really good but i lost the use of bluetooth and voice guided navigation.

Now my question is I removed all that when I traded in my 08 GTS, and I want to put it in my 2011 Ralliart, which just has the basic stereo, I do not want to lose my bluetooth input for the stereo. It is a really cool feature and I really enjoy hopping in the car with my iphone in my pocket and boom my pandora starts playing immediately. I need to figure out a way to get the amp and better speakers in the car, while still retaining the factory head unit and functionality of the bluetooth in-put.