I ordered a new Jabsco Comfort Quiet Flush Electric head back in November 2021 and it's still due for delivery.
Meanwhile I consider switching to a Johnson Aqua T Silent. It's about half the price and seems to be about same level of quality.
However, the mountings won't fit. The big question is how to properly mount the new head? Can I use wood screws or do I need to (how???) get bolts into the head's pedestal (this is on a Bav 40 and we're talking about the aft heads)?