hey, i'm getting ready to add a stereo to my DX, but i'm not sure what sizes of speakers i need. anybody happen to know?

Check out this post...

http://www.elementownersclub.com/forums/viewtopic.php?t=2692

6.5" for the doors (both front and back?)
what about the little ones that go by the windshield?

also, is it a real problem to run the wiring for subs in the back?
and i have an external 10-disc changer....suggestions on where to mount it?