I mounted it on a shelf i built behind the engine and forward of the waterheater.
Its a snug fit but i wanted the weight low and on the centerline. i had to move my start battery to the "trashbin" space. i never used it for garbage anyway.
I was going to add a sound shield but the noise is not bad at all, very much quieter than the main engine. Being able to hear it gives me an indication if its running well too. I added an extra blower connected to the cowl on the transom to get rid of the added heat.
so much nicer to run this unit instead of the main engine for charging. I can also make hot water using the inverter.
It puts out a solid 120 amps at 2500rpm even when hot. I like the slower/quieter speed (max is 3000) and its about the max my 470 Ahr bank should get. Suppose to use about 1/8 gal/hr but i havent run it enough to check this out.
I dont worry about power usage anymore as this thing charges the bank really fast and quietly. That and the watermaker are the best things Ive put on the boat for cruising....
I'll snap some pics and post when i get back to San Diego in a couple of weeks.