I thought I heard that they had purchased three of them, and one went to Australia?
There's a couple of threads on the cars here if you search "Fast & Furious". Here's the one where one of the PI Members talks about one of the cars that went to Aus. - pretty far down.
Fast and Furious filming | The De Tomaso Forums (infopop.cc)
Apparently, there were 4 cars used in the shooting?
Rocky