^^^ this. Those 2K Zenon boards are beast. I clamped nearly 3K out of one running .35 ohm rising to .86. If you can get this for 425 or so in hand it's a good value. Mine did fairly well with one group 34 battery in the cargo area + HO alternator. For .5 ohm daily a third battery would keep you right as rain.There is a saz 2000d in the amp section now for that price I would check that out