Yes Yes and Yes.
The Beovox MS150 got state of the art in reviews and every Beovox exept the X series are worth rebuilding if you have too.
I had recently 2 pairs of Beovox S speakers done and now they can laste another 20 odd years. They sound great!
On my Danish B&O personal thread about my collection 2 members have allready gone through refoaming their Beovox MS150 with great succes.
Be good to your B&O and it will be good to you!