I have the BOSE system, and like many of you I hate my BOSE system. Mids are out of control. Aside from that it's clear... bass, mid-bass is so muddy. I need another head unit. BUT I want my steering wheel controls. I want my trip. Can't live without them. I paid $17k to have them, I'm going to have them. What do I need to do to retain them once I've set the stock headunit on fire?