Vibration problems

Need some help figuring vibration prob. On my 2010 Tacoma 4wd. So I had issues with vibration on my rear end. I changed the center support. It help a lil. But still vibrates. So I changed all 3 universal joints And it got better. So I got really irritated and just bought a new drive shaft form toyota. I was so much better. But wen I get to the speed of 15-30 I could feel it vibrate but not as bad as it was. Once u passed 30 mph it was fine. Got new tires and still does the same thing. Even slowing down I can feel the vibration on both front and rear end and on steering wheel too. So don’t know what to do. Need info pls. TIA

 

does the vibration feel the same in 2hi and 4hi?