clip
and the Borghi bar from Italy is the other option. This is not a badge bar (which would vibrate) but is fixed to each overrider for added stability. Of course this means drilling a hole in each overrider.
The photos of mine are at
http://www.talkmorgan.com/ubbthreads.php/ubb/showflat/Number/99681/Since these photos were taken I have fitted some badges.