My Freedom 20 that came with the boat only puts out 90 volts when inverting. I'm looking at 2000w replacements, but the space under the port settee is limited. Magnum and Go power pure sine inverter/chargers are two I've been looking at. They are bigger than the Freedom 20. The installation manuals for them call for more room for ventilation than is currently available under the settee. Perhaps I need to modify the space to make more room for ventilation and still keep it separate from the batteries. What have 380 owners done to replace their Freedom 20s? Which units have you used?