I s the Ping adapter the same for the Ping G driver and the Ping G410 series? And can a broken shaft below the ferrule on the adapter be drilled out?

Answered question

Two different adapters – Golfworks stocks them both.
Britt posted this regarding extraction of broken shaft at hosel. Drilling will work, but using the shaft extractor (an easy out) is recommended:
http://ralphmaltby.com/questions/question/removing-shaft-from-hosel/