I see you are talking about prostate simulation. That is something I have been wondering about as of recent. I have been wondering how to stimulate the prostate with a jpouch. I would assume it is the same place as before? And if so when we have anal sex do we still have prostate stimulation?
Yes, yes and yes, in an answer to your three questions. Unless you've been told otherwise, or have another condition affecting it, it is in exactly the same place and behaves exactly the same way. You can feel it with a finger (after all, that's how doctors check it for abnormalities).