Hi Nigel
I typed the part numbers into the Google search engine and a company called AeroVal cited the following prices: 38223-000 ($94) and 38223-001 ($136).
The parts are available; a big plus. And in my world those prices may seem high but in my experience they aren’t given the small size of the fleet, and the certification requirements.
I recommend contacting the following Piper Parts suppliers for availability, cost and shippping times.
http://www.baspartssales.com.
http://www.westair.com in Boise.
Please let me know what worked for you.
Steve




