JL Audio speaker fitment??

I have a 2008 Tacoma Double Cab. I want to upgrade my speakers to JL Audio without adding an amp or running new speaker wires. First i wanted to know if 6x9 can fitting in the rear doors? ********* has 6x9 and 6.5 kits. The JL Audio site and other sites have different sizes for the same speakers. TR600-CXi is a 6 in. speaker and TR650-CXi is a 6.5 in. one. Yet crutchfield and other sites explain that the 650 fits most american cars and 600 fits japanese. something about "true fit"?

Anyone have experience in this? I dont want to purchase speakers that wont fit correctly. Thanks.

 

im running JL 6.5" VR components up front and polk 6.5" coax's in the rear. made baffles out of .5" mdf for both front and back and they fit just fine.