yea, You are definitely confusing drum diameter 70 or 90 mm and the axle over lock nut distance which is 10cm .

unless as re-machined custom , which is what green speed did..
they use the inner face of the drum portion of the hubshell drilled, as the other spoke flange.
& cut down the other flange , from what I saw ... looking, 10 years ago..

putting out the money to Ben Cooper in Glasgow, would get you a disc brake front wheel ,
and an Alfine 11 speed disc rear wheel with his custom made front forks and rear portions..


Post Brexit it could cost More..


.....