This is a 48×24 Forrest of tabs ground plate I purchased from B&C. I cut each side in half longitudinally because I don’t have room for the full plate on the inside. It’s located on the angle which supports the forward baggage floor. On the inside there are washers between the plate and angle because the shop end of the rivets protrude.
If I had thought about this a little more I would have used the battery box bolt as the primary bolt next time…