Raptor is swaying at high speed acceleration

Bought my truck about 6 weeks ago. Around 70mph+, pedal to the floor, highway acceleration the truck starts swaying back and forth. So today I had it aligned at ford, they didnt say anything was crazy out of alignment. The steering is definitley tighter, but it still sways back and forth at high speed acceleration. It feels like its coming from the rear of the truck. I know the front shocks, wheel bearings were replaced at 50k. I've searched on here to find solutions.....rear shocks haven't been replaced and/or rebuilt as far as im concerned. Anyone have ideas? Figured i'd ask before I took it in to get some ideas. Truck has 83k, serviced regularly at ford where it was purchased every 3-5k.

Sorry got nothing on your problem, never had in my truck. Congrats and Welcome on your truck! We like pics here

Mine does it too. Seems to be more noticeable on certain roads.

These trucks are so dependant on the shocks, I would guess the shocks at that mileage are in dire need of a rebuild. The truck will act like a bowl of jello.

Check the tire pressures also.

I'm also wagering on the shocks. Rebuild time. You're well past due.

are the shocks leaking fluid.?.

What tires are you running? Are you at factory setting for the shocks?

Delaminated tire.

normal... you're breaking the tires loose.