No joy here. Literaly. The signature of a PEF file is Joy!peff
OS 9 know how to load PEF files.
The loader looks to the resource fork for a cfrg resource type to identify where code is. It will be either in the data fork or a CODE resource.
Now an application can load code from any resource/data fork it wants and run it, but that is application specific.
This may be how the DAE is loaded, but as that is a system extension I'm confused how it would work at all.
The ProTools LE 5 you provided has all the correct things for loading in OS 9.
Not one of all the other files contains a PEF container whatsoever.
I'm going to say at this point, it's not possible.
That's just my take on it.