Phill,
A friend of mine went up to the cape in his 60 series troopy and suffered some damage as well. The worst of it was the body panels on the rear popped away where it was factory welded together. He said that you could only do 5 kl/h and suffered this damage. He was a cautious driver to go with it.
I also know of others who have suffered major damage up there but one story is enough.
Graeme