For those who want to run the EAC but prefer the Black Bone gearing.

The Black Bone Clutch Bell with the 15mm diameter shaft is compatible with minor machining of shaft.
There is a 3mm tall shoulder where the main shaft meets the bell.
This shoulder needs to be machined down to 1mm as in photo to be compatible..
Attached photos are of a bell BB was nice enough to machine down before sending us to test compatibility.

The EAC unit without Vertigo Hex Drive Bell and Pinion gear

EAC unit without bell or pinion