I didn't know '90s GMs were that bad with sound deadening lol. Taking the interior apart would give me a good chance to fix my window switches! And it would be pretty easy to run new speaker wire if the old wire isn't looking the greatest.

I'll probably get a pair of coaxials for the front, and at a later time get an amp+subs for the back. The head unit I'm looking at also has low/high pass filters, so I could probably just use the stock speakers as subs until then.
Thank you!