Hey Lin,
Thanks for the links. So car speakers might work OB then! woohoo

Yes its all about budget here, but I did find these:
http://www.ryda.com.au/Pioneer-TS-A2003i-Car-Speakers-p/tsa2003i.htmagain, a bit expensive and no T/S specs, so maybe your Kenwood 6by9's might just do the trick.
I have two 12" high Qts woofers, so I thought OB with car full-range might work.
Very much appreciated, Grant