Folks seem to have migrated away from your original question. I found that an oscillating tool with a smooth blade works quite well to remove eternabond and is a WHOLE lot faster than a heat gun.
Kinda depends on which Monaco you're talking about. I have an '06 Diplomat the required a French door model because of the limited space in front of the fridge, eliminating a full door model. I used a Samsung 197, but I believe they quit making that model. Measure your opening (taking into account the amount it can be increased by lowering the floor over the furnace) and also the amount of space in front of the fridge for the doors to open. Most fridge listings have the dimensions including depth with the doors open so you can tell if it will fit. Keep in mind that some fridges will not run on a modified sine wave inverter so check to see which inverter you have. If you have a true sine wave inverter, you have no worries. Hope this helps.