Here are a few links to new shoes:
reallyrightstuff.com/Items.aspx?code=BodyHassy&key=cat
http://www.markinsamerica.com/MA5/category.php?req=3
http://www.bhphotovideo.com/c/product/2125-REG/Arca_Swiss_802221…

Some replace the QR plate on the bottom of he Hasselblad, some screw into the 1/4″ or 3/8″ tripod socket.