pull your back seats down, there should be some screws right behind them...around 4. then you will need to pull of the little grey panel the screws came off of. afterwards, you will need to unsrew the screws underneath the speakers in the trunk, just leave your back seats down and crawl through right there. once you have done that, just pop off the back panel, and then you will need to unscrew the speakers, then pull them off, (just pull them because they have a glue that holds them in, they will not brake!), then you will need to cut off the stock adapter on the end of the wire that was attached to your speakers, then you will just attach the red and black wires to your speakers and install them. reverse the process to put your panel back on...note that you will not be able to use the grill that came with your speacker because the stock speaker grill (or cover) has little interlocking pieces that latch onto the rear dash panel.
Impala HQ .com
6x9" on the rear deck.
Front door speakers - 6.5 rear speakers - 6x9
The 2006 Chevrolet Impala has 58.6 in. of rear shoulder room.
The 2006 Chevrolet Impala has 57.2 in. of rear hip room.
The 2006 Chevrolet Impala has 37.8 in. of rear head room.
The 2006 Chevrolet Impala has 37.6 in. of rear leg room.
The rear track of the 2006 Chevrolet Impala is 5 ft. 1.5 in. (61.5 in.).
They should be 6x9's.
6.5 in the front. 6X9 in the rear.
The 1963 Chevy Impala dashboard speakers measure 4.5 inches in diameter. The rear speakers measure four inches by six inches.
The front door panels have 6 1/2" speakers and the rear speakers are 6x9"