Tried to post this yesterday- Wouldn’t came up.
This is what is available today. They are the
same except for where the plug wire attaches.
Tubs
https://www.ebay.com/itm/284463937035
Correct NOS ones are available if you want to spend the money
https://www.ebay.com/itm/133917369301?hash=item1f2e18e3d5:g:VPwAAOSwTHhherHt
You can also use these and ground out one lead.
https://www.ebay.com/itm/133756685510?hash=item1f24850cc6:g:zeEAAOSw3Sla4MKI
A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.