The community will undergo maintenance on October 16th at 10:00 PM PDT and will be unavailable for up to one hour.
Have you tried 3DModelSpace? It's available from the Favorites tab in the Navigator in both Wildfire and Creo. The link is:
http://www.3dmodelspace.com/ptc
David R. Martin II
Senior CAD Application Specialist
Amazon
Positronics has CAD files, but I don't know if they have what you're looking for.