MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
brba, I am so sorry for the delayed response. The Predator hot end is apparently a very close clone of the E3D V5 (not V6). E3D themselves may be able to provide a replacement, or you can search their site for the engineering drawings for almost all of their components.
Also, there is a very slight difference between the Predator hot end and the E3D V6, primarily between the diameter of the heatsink fins and the hot end heater block. A gentleman in Canada makes an adapter to to resolve the first issue, and a few minutes with a file resolves the second.