what are the best speakers to replace the stock one?? does anyone know the sizes for the stock? and is it better just to replace the stock amp also? not sure what the power rating the stock amp are............thanks......

 

That's a very subjective question you're asking. Just go to an audio shop and listen to all the speakers in your price range and determine what's best for your ears. For a coupe, non-Premium package speakers are 6.5" fronts and mids. Premium Bose are the same but add 2 6"x9" speakers on the rear deck.