Well i have an accent 2002 and i want to change the original speakers on the rear of the car, i want to put 2 6 x 9 pioneer speaker, does someone has his car as i want?

here is a image of the place for the speaker

 

You're not going to be able to fit 6x9 speakers in the stock location. So your choices are:
a. build a speaker box to install the 6x9's and put it in the trunk
b. replace the stock round speakers with higher quality speakers of the same size

 

^ok

so, ill buy speakers of the same size has the originals, 300W is ok? the stock speakers are 40W hahaha, so it is gonna be a big difference right? i want clear sound...