I am looking into building a battery bank from a used Nissan Leaf battery, and charge it with solar and the WATT propane fuel cell when it comes available. However, I also want an under hood generator. I was surprised to find that most are just a big dc alternator that goes through an inverter. I am more interesting in a 120vac alternator. It would be more efficient, the wires would be thinner, and if the invert fails, I still have an AC source. They make both a 120 and 240 version. More wattage from the 120 though, which is the route I will likely take. Has anyone installed a 120vac Underhood generator?