I found a bunch of old pictures of my Blazer I had in high school and college. I figured scanning and posting them was the only acceptable course of action.
What it looked like
https://i.imgur.com/CaADxyW.jpg
https://i.imgur.com/b8H4nyk.jpg
https://i.imgur.com/zwgFiXZ.jpg
The first "system" I had was a Majestic 9400SW amp and 2 Orion Cobalt 12's. It was great! Here is a pic of the subs
https://i.imgur.com/q75EwIW.jpg
If you could zoom in on the dash you'd see an old Alpine shaft style tape deck. It was in there when I bought the trucks in 1993.
The rest of these I'm not sure what the correct order is. I think they are in chronological order but hey it's been 25ish years, I don't remember.
I paid for this custom amp rack after I upgraded to an Orion 225HCCA and 2 XTR 12s
https://i.imgur.com/GNzzA2S.jpg
I made the little covers so you couldn't see the amp looking through the windows
https://i.imgur.com/crP1GzQ.jpg
I requested and paid for this version of the door speakers going in. The installer still brings it up from time to time. It was apparently a very major PITA.
https://i.imgur.com/5j2Z7EC.jpg