Weird rumbly vibration in floorboard, needle bearing?

So I’ve got a 2” lift on my 2017 and I’ve noticed a weird vibration under my feet from 30-55mph. No noises, just a kinda rumbly feeling vibration. Doesn’t vary much with speed, doesn’t feel like a tire out of balance. I’m assuming it’s the needle bearing and I need to order a ECGS bushing. Anything else it might be?

 

Switch to 4x4, if it stops rumbling at those speeds, go ahead and change it.

You'll need special tools, most Toyota offroad shops can do it for you and keep them in stock.

 

Mine is doing the same. ECGS bearing coming soon but having a hard time finding a shop around St Louis that will install it. Guess I’ll tackle it myself.