I have the drawtite hitch. One thing I noticed with it was that my shackles would bottom out on it and limit my suspension travel when I was offroad. Then I got a Rancho lift and it was worst because the springs were longer and would bottom out all the time. Then I found some boomerang YJ shackles from Currie and I have not bottomed out since.
http://www.currieenterprises.com/CES...t.aspx?id=1100
I'm not sure how the curt fits but if it extends behind the shackles it might bottom out as well.