02 Suburban stereo- speaker sizes?
 

So, I bought an 02 suburban last week. LT with base [not bose] stereo I believe. OEM stereo sucks in this thing, and the rear cargo area subwoofer is blown. I am going to piece together a better speaker and amp setup for it, just curious what the oem speaker sizes are? My 98 was 6.5"/1" components in the front doors, hoping is the same or similar setup in all the doors for this thing. Also what size is the sub? Thanks