No pictures tonight, but I spent about an hour on the seatback supports. It consists of 3 pieces per side, a spacer, a bent piece of Alclad, and an angle. The assembly is riveted together and allows for 2 intermediate stops for the seatback to adjust the angle of the back. I’m planning on using a custom interior from Classic Aero Designs, and it uses a seat with an integrated support, I’ll only use this assembly if I ever use the Vans stock seatbacks.