What i did instead of using the XB headlight assembly. Was buying the dominator twin headlight, XB carbon fairing (customising 2 small brackets to fit the original mount) and the lowered instrument panel from twinmotorcycles.nl
I then lowered the headlight brackets all the way down. And moved the ignition switch. I also changed to super bike handlebars. Giving the x1 a hardcore streetfighter stance. I also like the look with clip ons. But personally think they are way to hard on my wrists.
Mine came out very nice. And probably cheaper than a xb conversion.
my opinion:
The xb is a much smaller motorbike than the X1. So using the original xb fairing/lights and positioning can look weird on some of the x1's i've seen. But then again, some people pull this off, I absolutely love the front and rear on purponys custom x1.
But you know, everyones taste is different.