I am in the process of replacing my RMD8555 with a Norcold N2175 thats nearly identical size and should fit right in. This is a DC only compressor fridge/freezer. it has a bottom freezer that pulls out like a drawer, and a fridge on top with its own normal door. In preparation for this, because we do a lot of week long dry camping, I'm upgrading my DC electrics, I've got a pair of 206AH 12V LiFePO4 batteries (from SOK Battery), I've installed a PD4655Li in place of the WFCO 8955 power converter, and I'm planning the beefing up of the main DC wiring, as well as a solar upgrade (360W LG panel on roof with a MPPT lithium compatible charge controller), plus a DC-DC charge controller to isolate/regulate the towing truck power.