If you look carefully to the left of the TruCenter, you can see 2 nuts (1 1/8") that attach the axle/airbag mounting to the coach. You will need to remove these two nuts to attach the mounting bracket. The other end attached to the tie rod and was no problem.
Enter the 4' cheater bar (3/4" pipe) which allowed me move these nuts rather easily. Leverage is a great tool!