Ford Focus 2013 aftermarket audio options?

Looking to drop $1000-$2000 for: radio (preferably single din with HD), tweeters, and door speakers.

I currently have a single 12 pioneer rated at 300 RMS hooked up to a 200 watt mtx audio amp at 4 ohms on the factory radio.

I also need a crossover to get the best audio output from my sub.

If you could elaborate on all the details, kit options prices, that would be great.

Added (1). Will eventually switch sub and amp as well, want it to bang hard. Above 1000 watts

$1000-$2000 for audio in a Ford Focus?

Hi so look at an alpine system this can be added to as and when you have the money.