What size speakers can i fit in the rear DOORS of my 99 XJ. Been looking all over the forums and can not find an exact answer. I know there are holes cut in the sheet metal for 5.25 inch. But can I squeeze 6.5 inchers in the rear doors? (like i can in the front doors)

And yeah i know i have to cut a speaker grill in the plastic door panels.

I am talking about the two back doors, not the rear hatch.

THANKS for the help, yall are the best!