:|Big 3 is in a sticky on the forum. Can't just cut a hole in current box, doesn't work that way.
Ported, done right , will sound almost twice as loud.What size box is it?What amp is it? Do you have good electrical on it? What is the ohm load to the amp?
I would for sure turn the box around, facing the rear, and you could probably use a ported box to gain a lot.
Bull crap, I am 43 yrs old and listen to everything from Country to Dubstep...And I will not suggest anyone run sealed. I'd rather tune a port and use good EQ than go sealed.in all honesty depending on the amp you are using you might get away with that 78a alt upgrade and the big3. i doubt there is much requiring power in that car. does it have power anything? a/c? manual or auto?
also agree with quack, get a ported box unless all you listen to is metal,classic rock, country. then maybe stay sealed