I came across this great deal if you looking into upgrading speakers in your car.
http://www.frankiesautoelectrics.com.au/sony-xs-gtf1627-6-ca…
Shipping was $7.95 for me and was delievered within 24 hours. I have not installed the speakers yet but online reviews are very good for the money…
They even included 2x 24 CD cases
I have checked JB and Supercheap and they sell em for arounf $70 mark….
**************Update*********************
I have installed the speakers and I am very impressed. Much better than my Clarion speakers at the front…Very clear…
Most people say sony car audio systems are crap. I Personally have Alpine Type R splits.