Heres some pictures from my Ice install in my first -88 S12 CA18ET.
Front 6.5" woofers w. tweeters on the dashboard (doesnt show).
Rear 6x9" JBL w. custom mount.
A bit diffrent from standard
And final install!
And rear the 6x9 install, also new wiring as std ones wasnt that much to use :/
Sold this car and at this moment i have a new one that im gonna start building on, pictures will come soon!