Need some help! I’ve got a 2009 GS 350 NON ML system. I purchased 2 way components for the front and rear doors (not sure if I should have bought rear components too). I also have a AudioControl LC2i pro, MARTS BTX8 DSP, Image Dynamics IDQ12. Before I purchase an amp or amps, I want to see if anyone has done this job on here. Where can I pick up the signal? Has anyone done an install on their non ML GS350? I need to do this asap because I can’t take the stock speakers and the bass roll off as the volume reaches 45.