yes it is the death wobble the bar and wheel bearings are good and for the brakes i did all that and they are soft but if you turn the truck off you have good brakes but start it up they are vary soft

 

i tested mine by putting my whole front-end up on stands and grabbed the top of my tire and wiggled it i will say though the drivers side bracket that the upper ball joint goes through didn't move but the passenger side did. Am i wrong and do i have one bearing one one side and ball-joints on the other. I think i'll just be safe and replace both bearings and all 4 joints maybe the u joints while im at it oh hell why not

 

For the brakes:

I hope you bled the master cylinder outside the vehicle before installing it.

Make sure the calipers are installed correctly. (The bleeder valve must always be on the top)

Correctly bleed your brakes: Fill a jar 1/5th full with brake fluid, puncture a hole in the jar top, connect clear hose from bleeder valve to very bottom of jar(submerged in brake fluid). Top off your fluid. Start from the Passenger Rear, then Driver Rear, then Passenger Front, then Driver Front, in that order. To bleed the brakes with the jar, simply loosen the bleeder, connect the tube, and then pump your brake several times until no air bubbles are leaving through the clear tube attached to your bleeder valve(which leads into the jar submerged in brake fluid). Close up the valve when completed and move to next position.

As for the vibration:

Get your tires balanced(Have them zero them out, not be within a spec)
*If you have a bent rim, they will notice on the balancer.

Get your vehicle aligned.
*If you have bad bearings, ball joints, or anything else they will tell you-as they cannot do an alignment with bad parts.

 

your truck is a 4x4 right? i'm telling you its the death wobble, which is either one or a combination of a bunch of bad front suspension components. those could be a bad track bar, ball joints (not tight enough since they're new), drag link, control arms, hubs, tie rod ends, trailing arm, tires, bent rims, etc...

read this:
https://dodgeforum.com/forum/2nd-gen...at-a-pita.html

edit: crap, i had this thread open and i was trying to find a video of a ram with the death wobble for ya and a bunch of people posted before i did.