These trucks are not Ultra 4 racer’s and I can’t think of a dirt road we’re they should be driven at a sustained 50 to 70 miles an hour other then a closed race course.
Please consider other people that might be using the same road and just drive slower for the safety of all.
Rant over 😜
Your going to need some new good shocks.
I would take a good look at all the suspension bushings.
If it hasn’t been done recently a front axle service is Advisable.