Goatee ... those are the UBH bodies I mentioned in my posts. They came in NAT and brass IIRC. As a substitute you can use the Balrog bodies of the same size or said Vitalgear 3x123 body with clicky or ... other custom options like TB's tubes.
There is a thread linked in the McGizmo FAQ thread listing and showing all E-Series options including those bodies.
You *can* use the 1,5xCR123 Aleph body with 1xAA, but tolerances might get a bit tricky.
Some pics:
Balrog bodies (came in various sizes, bare, NAT and BK)
UBH with spacers:
McLux bodies with the rare 3x123 version:
Vitalgear bodies (newer version with clickies)
Brass UBH:
TB 3x123 Tube with Aleph components
bernie