I had looked around, and previously though they were 6x9, and searching today, came across that "non-bose" back speakers are 6 3/4, but mine are bose, I bought a pair of "infinity"s, yet they don't fit. They just barely don't match up. So is the bose rear speakers 6x9, or 6 3/4? Are infinity a good brand of speakers to get, and will they have as much bass as the factory bose?

 

www.printaruler.com

it's a real link, try it out and then you can be sure for yourself what size they are

also, 6x9 will look a lot different than 6.75 (rectangle vs round)