I'm currently installing a 50amp air compressor behind the left most passenger seat in the middle row. I've routed a 4 gauge wire from the positive terminal of the battery to the back. I was wondering if I could ground it to the body mount in the photo? I do have a 1 inch body lift, but I don't know what materials were used as a spacer and if the bolts could carry the current. Or if there were any other locations I could ground to? The interior behind the middle row is all gutted so I have lots of exposed metal.