True tail wag is not something that sumo or timbren bumpers can really fix ... however they do add some side to side resistance into the equation. If it handles better that's all that matters!
If we keep the axis much longer and a few other "if's" the +2.5" front springs have my name on them
The rear is easy to add spacer blocks or air bags to compensate if needed. I really liked my in-dash controls for campsite leveling I had with a previous air bag setup. It's pretty cool to raise/lower a couple inches when needed by pressing a button to dump or pump individual bags.