With respect to the AM Gearbox -- when is it going to be available?

I'll need two and they're priced significantly lower than the kit transmissions from IFI.
Also, how're we meant to mount them? I haven't looked yet at the plans for those gearboxes, but from the photos, I see no obvious mounting points.
[EDIT]
Okay, I've looked at the plans... 1 more question, then:
Why is it asymmetric in design?
[/EDIT]
Thanks.