I've got a 2003 Yukon with the Bose (non-premium) system. I am planning on doing a full upgrade on the audio system. I have purchased 4 6.5 3-way door speakers, a 5 channel amp, a 12 sub w a box, a radio and a generic wiring kit for the head unit. I did not purchase an interface as losing the features that go with the interface do not matter to me. However, I need help with the installation. If I use the wiring kit (it is GM specific) will the radio work? Mind that I am completely ditching the bose amp. Additionally, is there anything else I should purchase (minus things like amp wiring kit, RCA's, Fuses, etc)?