Audio Systems: four 6x9s, honda civic ex coupe, jesse hernandez

Question
hello again,
This is the last Question I promise. Earlier you suggested to me that I add 2 more 6x9's in the back of my 1999 Honda Civic EX Coupe. I am very interested in this suggestion and am curious as to how one would go about doing this? Thanks again.  -Jesse Hernandez

Answer
cut a hole on the rear deck for two more speaker
lose the rear cover and make a new one out of wood  3/4 of onch or 1/2 inch mdf wood
the new cover needs carpet or leather now install it back and mount all 2 speakers
it will be a good idea to get darck window tinting on the back glass 5 % or 20% film