Is the touring a Premium Audio model? I've tried upgrading the sound system twice. The first time I'd did the easy upgrade, the second time I did a full and proper one which greatly improved the quality of my system. If you have more info about what you want as well as some of the details about your stock system, send me a PM and I can direct you to some really helpful threads and answer any questions I can. As long as I'm not too busy, I should get back to you quickly.
Also, to give you an idea about the improvement a proper upgrade will provide, I regularly sit in my car out front of my house or go on a joy ride just to listen to music because it sounds that much better. I have a pair of Bose headphones and they're great, but when I want to be enveloped in the music, I always go to my car