Hello and happy new year, I just joined as I just picked up a 2005 gx470 with 133k and nice service record, was garage kept, speakers are fine but I am an audio guy, i know my way around wiring and have been conteplating buying a gx for a while, ideally wanted one with no nav to avoid the climate control issues but to find one the way I wanted( 2005+ grey interior, light blue, under 140k mile, for less than 13k, non nav as mentioned) had become almost impossible. My family is growing and need a secondary car for mountain and weekend adventures and saw this deal and jumped on it. Now with the little background out the way this one i bought comes with nav and ML. I've read about the two options, (not interested in the Tesla style head unit), Beat Sonic MVA-81 and the groom Vline which I read is really crappy for the 2005 resolution. My question is has anyone gone all out with the MVA-81, I've owned toyotas all my life and am familiar with a lot of the harnesses, my last build was for my avalon with the jbl system where I ran a 12 channel Dsp for the 12 speakers which were all replaced powered by 3 4 channel amps actively and added a single 12 subwoofer. Has anyone tried anything like this with the MVA-81 and had success or will I have to go in blind and see what happens? I'm interested in MVA-81 integration with possible flip out screen single din, by passing ml amp and full speaker replacement with series and passive components as well as adding a subwoofer with good end result.