I was thinking of doing dual batteries under my flat bed but the question is do I move both batteries under the flatbed? or keep one up front and just run the second one under the flatbed?
I am thinking right behind the cab corner. It would keep weight centered rather than offset it on the back. Old pic here but you get the point.

 

If you can do it, I would move both batteries there. That's a great idea.

 

Great idea. Yea move both batteries. Also get Optimas, otherwise a normal battery won't last you to long.

 

Yup I already have a optima redtop I guess I should find one matched to the same CCA as my current one.