If you are reading this thread, here is what I ended up with. 4 gauge stranded wire to a 125A slow-blow fuse then another 4 gauge wire to the starter positive. The power then travels down the FFR provided starter wire up to the battery. I mounted my fuse box to the frame rail near the starter by tapping M6 holes in the frame and using black button head fasteners.

alt fuse to starter wire 1.jpg alt fuse to starter wire 2.jpg alt wire routing.jpg alt fuse wiring.jpg alt fuse no cover.jpg alt fuse with cover.jpg