it comes with the non nav, non JBL system. not sure what size the speakers are because crutchfield and other web site list the sizes from 5 1/4 to 6.5. i know that it has a small center speaker too. does anybody know what size the speakers are? it looks like component speakers, front and rear. I want to keep the radio but upgrade the speakers and amp. What should i do about the center speaker in the dash. I have Alpine type r with the an alpine 5 channel and not to happy with the sound. I think for the money, i could have got better. I'm looking for around 100 a set for component speakers. any suggestions on what I should do. this is a big car. looking for big sound.