I have them on 08 nightster. I only changed out the brake line. I re-routed the other cables from the outside of the forks to the inside of the forks.
The stealer wanted to charge me $700 dollars.
For $160 (bars, cable and clips) I did it all myself.
No hand numbness or cramps on 200 - 300 mile rides.
In my opinion, these bars should come stock with the Nightster.