u/Puzzleheaded-Top-300

I have an 06 tundra dc sr5. I’m having and issue with a vibration. Can be felt in the front end and the whole chasis when it gets going. New u joints and carrier bearing new tires road force balanced new lower ball joints sway bar links and tie rods. Still the same vibration. It’s most noticeable around 1700rpm 65-70mph. Can’t feel any play in the wheel bearings. Brake pedal is mushy and it seems as if the pressure changes from time to time. Could this be a warped rotor or failing caliper causing these vibrations? Any help is appreciated. I also have noticed when doing highway speeds letting off the gas the truck doesn’t exactly coast feels like there is some drag that slows the truck down.