Are Bosch Yttrium spark plugs-any good for our cars? Autohauz indicated they are dual electrode OE plugs. Been 31,000 miles and I am beginning to be in need a plug change.

Autohauz indicated there are "updated" Bremi (coil to Spark Plug) Spark Plug connectors. What does that mean?

I am sure mine are original since 95. Thought I would change them.