Here is a look at how I strapped down the battery. Since the base is so strong and holds the battery well I just opted to throw a limiting strap over the top of it that I picked up from Poly Performance in San Luis Obispo.
I actually made sure to make the studs for the front support long enough so that I could bolt anything else to them when the time came to secure the wiring and other things. It's nice to see it all come together. The nuts and washers are kinda temporary for now. I have a bracket in mind that I want to make when I have time and after I'm driving this truck around.