And big surprise... I am laying down the Optima on it's side. The dimension on it's side is 2 inches lower than if the battery was right side up. I'll be insulating it with some rubber to keep it from wearing through the weaker plastic on the side. We will see how it holds up. This really lets me tuck the battery up in the fender area and it puts the Optima battery terminals closer to where they need to be anyways.
The rail type system I made from a couple 2ft pieces of tubing is really stout and holds everything inline very nicely. Being mounted with 3 mounting points I'll be powder coating this section as well. Cutting the inner fenders out and tucking the edges of the body really makes it nice when it comes to mounting these components away from the engine.