Okay Im the proud new owner of a 2002 Tahoe z71 and the stereo and speakers suuuuuuck. Ive never installed a radio or speakers before my question is what do you guys recommend for head unit and speakers and what all parts will I need to do this job? Do I need to run new wires etc etc etc help me sorry for such a newb question and yes I have done some searchin. Thank you in advance