[folivier]

A few of the Foretravel guys have gone this route. But you'll still have a 20 year old fridge. Gaskets, racks, handles, etc.
The replacement cooling units seem to be ok but many more have gone to a residential type. There are a few that are close to the size of the Dometics. Depending on how you use your coach whether dry camping or traveling from hookup to hookup will determine whether you need solar panels or even a smaller dedicated inverter to power a residential fridge with less loss than your large inverter.
Here's one at Homedepot that may fit and give you a larger capacity: https://www.homedepot.com/p/Frigidaire-1.../310378589