The one thing to kkep in mind with the D-tuna is that if you crank the trem back it will hit the body,so you may want to think about having a small channel routed there.
Good thinking on the tremsetter,it makes all the difference with the D-tuna for stability.
Just pay attention to which lock screw you insert in the back to secure it to the trem.They usually have 2 sizes,take your time and use the right size.
With the tremsetter,measure carefully before trimming the brass rod.
Also,tune and lock the strings on the trem before setting the rod.