Yesterday I put back in the Kenwood it had when the car lot took it in, they claimed it was draining the battery and put in a cheapo Dual unit from WalMart. I asked for the old one back and fortunately they still had it. The wiring had been hacked a few times, but not the stock plug, just everything from the Pac RP5-GM11 to the stereo. I pulled it all out, sorted what needed to be there and removed the wiring mess. If there is a drain, I will replace the PAC first. I ordered a backup camera and one of the rear door speakers was rotted so I ordered a new one of those.
I am actually impressed with the Bose LUX system, though it will not win any awards it has enough volume, clarity and sound quality for our needs. I have new amps and Infinity speakers in my shop that I was going to put in my old F350 but decided against. I do not believe I will put them in the Yuke, it isn't needed.