Take a look at google maps. If it's not on google maps, a prado can't do it
Watagan road runs from Sandy Creek Road at Quorrobolong. It turns into Watagan Forest road. This is the main N-S drag through the Watagans. Runs a fair way south, and there is a way to link into the Watagan State forest, and then Ourimbah State forest.
All easy stuff, even a corolla could do it.