Sway Bar, Panhard Bar or Steering Stabilizers??

[6600DURAMAX]

Truck has been done for a couple years and has always had this same issue. When driving down the road the front end always seems loose wants to jump lanes with small bumps or uneven lane grooves. Now, I understand that 35'' bias ply Pit Bull Mud Tires are not going to ride down the road like silk, I am just wondering if any of the above changes will improve the drive qaulity. We have built similar trucks using a panhard bar but they still seems to have the same problem.

(FYI -Dana 60 has been completely rebuilt, so that shouldn't be the issue)

Was thinking about adding steering stabilizers but really can see a clean way to do it with the high steer kit? Currie Antisway Kits would make an awsome ugrade just dont know if it would help this situation? Panhard bar I have mixed reviews with even though this is probably the best option?

Opinions?