onetrack
The Jabiru piston is produced in a plant that manufactures pistons for ACL. There are subtle differences but it is similar in most dimensions with the old 3.8L V6 Commodore engine, however the rest of the story is really a moot point.
The pistons are never the cause of any failure I have ever seen or heard about.
The biggest causes are likely to be the RAAus fleet and their tinkering owners.
If you think buying a C172 with an O/IO-360 in it means you have some highly scientifically special genuine Lycoming piston in it you are in for a shock. What is more it may have say a Superior Air Parts piston, and if you are ever in Texas and visit the Superior company you will find lots of parts, but not a factory, as they manufacture by sub contract from many and varied suppliers.
