I bit the bullet and bought a new refrigerator unit to replace the old rusty non-working one in the boat.  I stepped up to the "SuperCold" model, which will need a thru-hull for its extra water cooling unit (for the Tropics).  

I bought the (1)  Adler Barbour Cu200 Qc Air/Water Cooled Condenser and (2) Adler Barbour Vd150 Qc Small Vertical Evaporator from Hodges Marine (hodgesmarine.com) for $850.25 & $403.71, shipped, respectively.  I highly recommend Hodges - their prices rarely can be beat!

Here are pictures of the unit and specs... I will add boat pictures of the install later...

Adler Barbour Cu200 Qc Air/Water Cooled Condenser

THE SUPERCOLDMACHINET CU-200 
BTU Rating: 650/hr. maximum @ +25F evaporator 
Weight (approx.): 18 lbs. 
Dimensions (approx.): 11.15"D x 10"W x 7.5"H 

Ideal for tropical climates & applications with restricted space-such as the engine compartment 
Accommodates large refrigerators-up to 15 cubic feet with 3" of polyurethane insulation 
Danfoss BD50F compressor 
Stainless steel construction 
Shrouded forced air condensers 

Modular phone-jack connection for thermostat 
Quick connect couplings 
Cupronickel water condenser 
High CFM fan 
Built-in trouble-shooting diagnostics 
Can be installed up to 15 feet from evaporator 
Precharged and ready to install! 

Adler Barbour Vd150 Qc Small Vertical Evaporator

VD-150 Small Vertical Evaporator 

Medium sized refrigerator to small freezer, closed evaporator. 

Cooling capacity: 9 cubic foot refrigerator 
Dimensions: 10.5"L x 11"H x 6"D 
Ship Weight: 12 lbs. 
Includes 15' of copper tube set, thermostat assembly, 2 Verticube aluminum ice trays and installation hardware. Cooling volume up to 9 cubic feet with 3" of polyurethane insulation - 40% on time, 3 cubic foot freezer with 4" of insulation - 50% on time.