I don't think they are all the same. I had some belt squeal issues, and finally tracked it down to the power steering pump not fitting correctly in the brackets.
It was the short water pump style, and when I got the new pump, it was clearly different in the reliefs molded into the body where it attaches to the brackets.
The old pump was not fitting in the cradle exactly right, and was causing the pulley to be slightly crooked. The new pump fit perfect and all the squealing was corrected. Hope this helps.
