vibration at 60-65 mph..Ujoint in drive shaft?

[82332]

I have a vibration the happens about 60 to 65 mph and hard to say where is coming from. I thought is was my tires, the were worn pretty bad. Had front end isssues, but this past summer replaced one hub, one outter axle, and seals. I put on new tires a couple weeks ago, Cooper STT's (awesome tires by the way). I still have the vibration, but doesn't seem as bad. I check the drive axle for sloppiness, it seems like the ujoints are tight, but could the ujoints still be the problem?

2002 F250 Crew 4x4
Stock

[Big Papa 03 dually]

Do you feel it in the steering wheel if so front end, if you feel it in the seat of your pants it in the back, tires, drive line u-joint ect.