some do have rear speakers but you will have to check it
Rear speakers are oval 6x8
they only have them running to the rear doors
The 1998 Nissan Maxima rear speakers measure five inches by seven inches. There will be to rear speakers, one speaker on each side of the passenger cabin.
all the door speakers are 6x8 on the 98 ford expedition.
6X8 inch speakers for front and rear doors.
On my Pug 206 I had speaker terminations for rear speakers but no rear speakers fitted. I simply chocolate blocked each one to extend the speaker wires to the boot of the car. Even if you have rear speakers fitted it should still be possible. I've got a 3dr car, so it was fairly easy. If you have a 5dr you may have to try and remove fittiings to run the wires properly
Crutchfield.com says that factory speakers in the 1998 Chevy Cavalier Sedan are: 4" x 6" door speakers and 6"x 9" rear carriage speakers.
The 1998 BMW 323 front speakers measure three inches by five inches. The rear speakers measure six inches by eight inches.
front dash tweeters- 3.25" door speakers- 6.5" rear deck speakers- 6x9"
If your talking about the door speakers then you will have to remove the door panels to get to the speakers.
behind the rear passengers head on the rear deck. you can see it looking through the rear windshield from the outside.
In-dash stereo " depth; Size code E Front speakers Front Door: 6-1/2" Rear speakers Rear Deck: 6x9"