Hi Mark,
I'm building one with a Hannes Bridge now. That has a BKP HSH layout and a Nanomag system. The bridge is a customer specified feature, as are the pickups, machine heads, etc. I've built five MG6Es since last summer and have orders for more. That's why I've been turning down all the full on custom stuff. The PG6s, like Craig's, are doing well also.