Thanks again Rosco.
Great info. That Gibb River Road looks very promising.
If we go we will be in a group of 4 to 6 cars (all Dutchies) so we will have to talk to the others about it, but since some of the group members are a bit worried about safety on CSR this might be a valuable alternative.
Another option is to do sections of the CSR. There are tracks from the CSR that take you back to main roads so you dont have to do the whole 1800klm.
I guess it depends on what type of trip you want but the CSR requires a lot of time ,effort and money.
If you were to take the main highway and do trips off to the sides , you will still require a 4wd, but I think you would see more along the coastal areas .
Places such as Coral Bay which is listed as a World Heritage site.
http://www.ningalooreefdive.com/coral.htm
Another one of my future destinations is the Bradshaws rock art.
The Bradshaws is in the Kimberley region and near the Gibb river rd.
They are well preserved rock paintings 4 times older than the pyramids.
http://www.bradshawfoundation.com/bradshaws/