Secondary battery

Has anyone figured out where to mount their dual battery yet? Pics if you have.

 

I have been trying to find or fabricate a battery holder to fit under the hood on the passenger right side against the firewall. There are 3 studs there already for some other purpose. It is really tight, but I could make it work. I do not want one in the back box.

 

I think those studs are for the ABS module. The OR 4x4 uses a different system (presumably to enable Crawl Control and Multi-Terrain-Select) so it doesn't have the same module. Well, that's my theory. I don't have my truck yet, but I have been wondering if it would be possible to mount an aux battery in that location. Good luck and be sure to tell us how you made it work.