Make it available to iPad 2
Make Siri avail able to iPad 2
Make Siri avail able to iPad 2
Shan't.
Not going to happen. The iPad 2 does not have the hardware necessary to run Siri, at least not at a level Apple considers acceptable.
The iPad 2 can't run Siri any more than your old DVD player can play Blu Rays....it lacks the hardware to make Siri happen.
Make it available to iPad 2