I have a 2009 Corolla sedan which has the factory head unit AM/FM/CD player. It also has a pair of tweeters in the upper front door panels by the mirror. It looks like maybe about 3/4 or 1" size. A 6.5 full range/woofer in the front door panels. In the back I am not sure if they are 6X9'S mounted in the rear deck. My question is what would be good, not break the bank, speakers? Does anyone know if the rear deck ones are really a 6X9 or a 5X8 or what? Front door speakers may need to be of the shallow design for the window to e able to go all the way down. Again I don't know for sure so anyone got the real poop and suggest some speakers also.