You started out chasing a vibration at that corner of the car, as I understand it.
You decided is wasn't the wheel bearing, then went after the upper bushing, now it's worse - does that sum it up?
I normally wouldn't expect an average worn bushing to cause a noticeable vibration on it's own, in this example, and my first suspect would be the wheel bearing, but let's list possible suspects:
Primary:
- wheel bearing
- wheel/tire balance
- cracked wheel
- tire
- 1/2 shaft - joints worn; bent
Secondary:
- Driveline
- stuck caliper/warped rotor
- ...
When drive the car, do you feel the vibration in the seat of your pants, or in the steering wheel or shifter? Mirror shakes?
Does the vibration change when the car changes direction of travel at speed?
When you test on jack stands, what is the angle of the wheel? As driven, dropped, ?
Have you had the tire/wheel balance checked? Wheel been inspected? Moved another tire/wheel to that location? What amount of tire wear is there?
Did you remove and/or disassemble the axle shaft?
How many miles on the car/wheel bearings?
How did you determine the wheel bearing was still servicable?
How much weight does the car usually carry beside driver and fuel?
Any other work done on the car recently?
Did you have the car 4-wheel aligned after doing the bushing?