Yes! Those bars have the crooks built in for DC already.
But, I'm going to give you the same heads up I got when I tried dual cam... You may find that the ride of the trailer is...about the same as with a friction bar set up... Especially if you are running two bars.
If you are running one friction bar and your trailer is over 26 ft you should be running two bars. Most of the time running a second bar will take any remaining wiggle out of a well set up WD hitch.
I personally had a situation where DC did not work for me. My trailer was too low to the ground and the cam bars would drag the ground occasionally. I also found that my Tow was the same with two friction bars as my DC ... IMHO adding a second bar is much cheaper and will probably take the little movements you have now away.
Thanks,
Jeremiah