Vibrations at speed

Driveshaft?? Maybe the driveshaft is a little bent, or has a U-joint going out?

Did the alignment shop do a 4 wheel alignment, meaning did they put the sensors on the back wheels too, so they could see if something was way out of whack?
Good call on the drive shaft. U joints are new all around, drive shaft looks undamaged but could well be out of balance.

I can't guarantee they did a 4 wheel alignment. like I said I dont 100 percent trust the alignment shop. My wallets worn thin.....I'm trying to chill out the spending, dont want to throw good money after bad