Still in useI fitted a pair of modified CBR400 headlights to my 1100.... it was over 20 years ago now and I can't remember what is needed.
I think I had a Touratech set originally that melted so used the mounting plate to fit the Honda ones on to it.

sorry) and fallen in love with the 'bus' headlight over the weekend so he won't be interested in your twin lamp setup any more.... (allegedly)....
