As it turns out the 1964 Thunderbird was from a company called Viewpoint Datalabs and was distributed for free as a demo of their work. After years of floating around the net and many incarnations its original license agreement has been left out of many releases and subsequently forgotten. The original body of the 1957 Chevy was also from Viewpoint Datalabs but through the diligent efforts of our very own moderator ScottA (yeah Scott!) I have recieved permission from Viewpoint to remain distributing it for free. To avoid any possible future issues I will no longer be modifying or converting any free, or presumed free, models for use in Poser. I am however still working on the 1966 Mustang GT based on the one in my garage. As there currently is no known existing highpoly model of a 1965-66 Mustang I do not forsee any problems with its eventual release.