Vibration Need Help

Got this little wierd vibration ( but feels like a flat spot) on my 1994 Jeep Cherokee 4x4 sport.
front end is tight , new tires installed, new u-joints in the front drive axles and new rotors..
this occures when you hit around 50mph and is less noticeable when getting up to like 65mph.

I haven't replaced the other u-joints on the propeller shafts yet and haven't replaced either of the hub berrings on the front end.

it had 140k on the jeep and was taken good care of, but i do think the other u-joints and hubs are original.....
other then that it goes down the road streight and smooth

any suggestions?

Thanks

My jeep was doing this, was a quick fix with a tire balance/rotation and replacing the steering stabilizer.

Even with new tires installed, could be an issue.... I've had tires rebalanced right after installation to fix issues...