Oh jesus
In my 85 mercury capri, It was am/fm only, so I went to the best audio store in the world, wal mart, and bought a road gear tape deck, and my friends dad installed it.
I bought a "road gear" 10 from walmart, and an 80 watt amp with no crossover..pffft who needs that shit.
I didnt have a box, so a friend of a friend gave me one of his old boxes. Of course it was a full range box with the bullet tweeter removed

Ported!
What was funny, my friends dad installed it, but didnt know what preamp outputs were.

he told me they were inputs. I hooked my sony discman up to it, and you know that wasnt the greatest idea.

Nobody knew any better, so we just hooked up the high level inputs