well dude its way easyer to just get a 6 inch specker in there. i got some brakets from northfielf (for free
) they came out of a pack of alpine speakers. they ha them just sitting there. about 6 sets lol, when i put my eclips gear in my car. and it work a treat.
6-9's are to hard to fit and will sound crap.
hertz speakers tho. i haven't herd of them before....