well you could hire a machine shop to bore out the mag to fit the hub and then you could gerry rig the spoke holes onto the hub so it stays put... but yeah that's ridiculous.
i spoke to trophy bike garage here in philly and unlike other shops i've mentioned this 'little' project/idea to, they said they've seen it done and it's possible... with a few caveats - more likely than not they'd have to extend my dropouts and/or reshape my frame to account for the 117mm+ locknut spacing since most all bmx frames are 110mm locknut-to-locknut... then it's a matter of building a wheel to fit the new hub and the new dropouts... apart from that though, the guy made the conversion sound reasonable.
which do folks around here prefer? sram i-motion 3 or sturmey-archer aw (or srf3) ?