The rear rack they have on the picture at morgan imports looks even more heavy duty than mine:
theirs:
Mine:
That model has it supported by the rear axle *and* chainstay. Bolting to the chainstays on mine would be harder with the full chain guard, but should still be possible. Hmm.
(Aside: can anyone identify the weird metal bits on the morgan imports flying pigeon going straight up from the front hub and then curving back to some sort of spring near the light?)