Thanks again for all the nice words guys!
The truck, or ute in Aussie, is a Toyota Hilux. It's about perfect for getting around the Outback. This one runs on unleaded but there are diesel models as well. The country is pretty rough on equipment, we went through both spare tires in one, in one afternoon!
As for mounting, the cape on this billy was pretty beat up, he looks better in pictures than in real life. He had no beard and most of the hair was rubbed off the back of his neck. There were some other billys that had beautiful capes, long beards and long neck hair. They would make a really cool looking mount. For mine, I just boiled out the skull and will have a nice European mount.
I only have one regret about this trip, I didn't take enough photos! We were so busy hunting I just didn't take the time. Guess I'll just have to go back, LOL!