http://saturnseries.net/DIY%20Guides/S-Series/DIYGuideS-Series-Inner%20Door%20Panel.htm
6 1/2" speakers in the front & 5 1/4" speakers on rear doors.
The front are 6.5" and the rear are 5.25" and if yours has tweeters then those are .75"
6"X9" speakers in the rear 6.5" speakers in the doors 3.5" spearkers in the dash
16.5cm in the front doors
In the doors front and rear.
6.5" round speakers in the front and back.
2 front door speakers 2 tweeters in front doors 2 rear door speakers
Front & Rear Doors take only 6x8 speakers
There are 6 speakers in total; two rear speaker located in the doors, four front speakers; two in the door and two tweeters near the airvents next to the front doors.
The 1999 Saturn SL2 has four 6 1/2" speakers. Two in the front doors and two in the back deck above the trunk space.
5.75 inch speakers are in the front and rear doors
The front speakers located in the front doors I believe are 6 inch speakers. The rear speakers are 6 inch X 9 inch speakers.