I have a Cabrinha CO2 6.5m, Cabrinha Element 10m, Naish Aero 12m, and Naish Aero 16m, all of which I ride with the Cabrinha 50cm PowerDrive bar and lines which came with my 10m Ele. I've tuned the 12 and 16m so the bar works perfectly on these kites, and that's what I prefer using.
If you allready have a bar and lines you are using with another kite and would prefer to use this Bar/lines, you can use it with this kite as long as you ensure when you are initially setting it up, that the lines are in the correct positions, or alter the knots on the kite or on your bar, or visa versa etc.
Either way, you can change your bar and lines between kites, you just need to ensure it's modified and you know how to set it up correctly.

Goodwinds
Elizabeth B8 - Wello Kiter