I found the following out fitting them to my B11
a) look into extended brake hoses - you will definitely need them if you have a non ABS bike
b) carefully "gain" as much slack as you can for all the other hoses and cables. If you don't you'll tear the clutch switch apart - ask me how I know
It went back together, but I found a replacement that isn't from MG if you forget

c) put the bars on loose and twist them all the way forward before you do up the bolts.
d) even if you do "c" above you might need to file a touch off the bottom corner to stop them touching the tank
HTH
Tris