Most essential upgrades / mods?

[sd38-2]

Replace the stock servo horn. The stock one is plastic and can easily strip out the splines. I got an aluminium one from my local hobby shop. I also agree with better wheels, I went with gmade steel beadlocks and pitbull rockbeasts.

[rag6]

Raising the front of the rear upper links is more efficient than using a sway bar. By making the upper and lower rear links parallel, you are reducing the torque twist without limiting the articulation of the rear axle like a sway bar does. I ran the sway for a long time, now running Codyboy riser/sliders. My truck is more agile now without the sway, but running a sway really improved performance over stock.
I would suggest doing 1 of those 2 options. I don't see any reason to do both at the same time. Either option will fix tt by themselves.

[Turtlejon]

Thanks for the input!