Part request

All, I’ve had an unusual demobbed update form come through to the site contents below:

I am after an ARI 23099 Centralised Audio Selection System box 5831-99-945-2674,
these were widely used in Buccaneer Mk II and Wessex Mk V, this is a direct
replacement for our Beagle 206 Basset unit which is slowly degrading. Do you
know if any of these are available?

Since this is to support a flying aircraft, would anyone on here know of a source for these which I can pass back to the requestor?

Like to help if possible….