Getting started on working to fixing my new Burb into what I want, now that my brake issue is fixed. 1995 Suburban SLE Southern Comfort Conversion, I tried looking online but I'm getting different sizes for the front and rear door speakers, what size are they exactly? Which exact radio harness do I need to use? My burb has the CD player under the radio itself, if that makes a difference. I have a headunit and subs lined up for it, just trying to replace all of the speakers as well because they're old/half blown. Pics of front and rear door speaker spots for reference