Hi Chris,
I e-mailed a lot with Brian from Canada some time ago and he sent me this picture of a GT40 which he had done in 3D. I can't find his e-mail adress now but if you check this page: www.lamborghinireplica.com and click on Brians work you may be able to find his e-mail adress.
Good luck
Here's a link to a zip file you can buy - it looks like it's been highly rated by other buyers, although it does cost $35 - samples below show the Rodriguez/Bianchi Gulf 1075 Le Mans winner, and a polygonal view. It's in .max and .3ds formats.
Here are some others - still in .3ds format - textures included but not assigned - but it is $81.50 (.fbs or .hrc versions available at $107.50). Does anyone out there have these files?