Should I buy just the wheel bearings or the whole hub assembly?

I have a 07 Toyota Avalon that has a sound coming from the rear the sound gets louder as I increase in speed it starts to come around 40Mph+. Im pretty sure its coming from the rear passenger side and I tried to look online to just order the rear wheel bearings since its cheaper instead of the hub assembly but I couldnt find any so does that mean I they only make rear hub assembly for my car?

How long ago did you get your car?
If you got it maybe a couple days or weeks ago. It could be that there is no power steering. However if you have had the car for a while now and the steering is going away. It could be that the power steering is breaking down on you. So I would look into your steering fluid for leaks.

However if you car has no power steering fluid and its not leaking, it could simply be the fact that the car has no power steering, and it is hard to turn things with no power steering.

I would also look into the driving shaft.

It look like you can go back to 2003 and maybe up to 2006. Talk with a salvage yard manager. I have an 09 sonata with a motor that came out of a wrecked vehicle. Three totally different vehicles use the same power horse.

What rearend do I have in my F150?

I have a 2000 Ford F-150 4X4 and the door axle code says H9 I believe its the 3.55 but is it the 9.75 or the 8.8 rear end the tags are all gone on it so I can not tell. It has 12 bolts on the rear cover as well any help would be grateful thanks. I am attempting to replace my rear clutch disc pack as my truck grinds when I turn at low speeds, but it makes absolutely no noise when going straight down the road, if any one has had this problems please let me know what there fix or outcome was thanks.

Update : It doesn't accept the M50 or the M132 M codes for air. I used to use the M50 on my old VQC 15-40 but this new machine doesn't like it.

The horizontal with the same control Will turn on the thru the spindle air, But it will turn off when the spindle is turned on, and it will only turn back on when the spindle stops. Any help with both the machines would be appreciated.