Hi Ken,
I installed the Sea Frost BD System.
Each system is custom made for the size of the refrigerator box and where you plan to put the compressor. The compressor will not fit in the space of the existing Isotherm compressor which is a bad location to start off with. I located my compressor in the cabinet under the port settee.
Before you call Sea Frost you should measure your refrigerator box to determine the square footage and dimensions of the box.
When you call or email you actually get to talk to the owner and he is very helpful.
Go to Seafrost.com
If you have any questions about the installation feel free to contact me.
Also, I would not recommend the ice cube trays.
They are expensive and do not work very well.
Dan