What can i do to customize my car?

I have a 1997 Pontiac Firebird and I would like to customize it. I would like to get a touch screen tv/dvd/radio thing for it. i would also like to get a box that would work for two 12" subs to fit in the back while not interfering with my t-tops storage. i would like to get something like a bore kit or something to make it a little bit more powerful (its a v6) and i would like to get a something to throw on it to make it sound louder and meaner. also i think lambo doors would be pretty cool. do you guys have any suggestions on what to get? also do you have any ideas for me to do to the car that you would think it cool. Thanks!