Stock headunit with cassette! Remote stock CD player (it actually works!) Stock speakers throughout.
Does this sound great? Not really. But this is a truck. I was about to put in some quality 6.5 inchers in the doors, then figured why bother? Funny thing is that I already had the 6.5 inch units, and the door panels were already off. I kinda just thought the stock headunit amp was not up to the job of driving speakers with bigger magnets and voice coils.
I happen to like the sounds that a traditional internal combustion engine powered vehicle makes, and while I like music, and have several very desirable Sansui component stereos from the mid 70s around the house, coupled with some quality speakers, while I'm in the truck (or my Mustang GT), I like to listen to the engine/gearbox, etc. more than to music.