Better Stereo With Navi System

[DannywantsaGS400]

I was wondering if any of you know if you can make the stereo in a 1999 GS 400 that has a navigation system any better. Like can you ad another subwoffer in the trunk? If any one knows it would be very helpfull. Thanks

[- t a k t i k s -]

yes, you can put a sub in the trunk as well as an amp, and have all the speakers in the cabin run through the amp as well. just make sure that you have a professional install it, the wiring can get pretty complicated.