I had one manufactured from a guy on eBay.
Contact the seller thru eBay and tell him what you need and he can make one for you. Good dude, good transaction—done thru eBay. Used AC 23-27 as my authority to be part of the manufacturing process.
https://www.ebay.com/itm/Cessna-Airc...IAAOSwPc1d3UfV
Some words on owner produced parts:
https://www.cessnaflyer.org/maintena...lications.html