I'm in a '99 Ford Ranger, and this is what sizes I can use:
6 x 8
Right now, they are stock (which is coaxial, right?). I'm wanting to go kind of cheap, maybe like $60 a pair or so. Also, I have mids in both doors, and mids in the rear. Do I even need to change my rear mids (I was told those are really just "backup" anyway). I don't need anything fancy, but I want something better than stock.