My 2000 3RZ power steering pump failed where the pulley slides onto the threaded shaft. The Pulley just spins and won't turn the pump (splines are gone on pulley and shaft)

Now what that means, other than no power steering, is that I can't reuse my pulley and can't get the reservoir off. SO a new pump from an auto parts store is a no go (I'd need to reuse the reservoir and pulley from my old one)

Looking for a used complete assembly now. Are they all the same throughout the years (96-2004?)

Thanks