Started by drilling cleco'ing everything together. I actually did part of this over the last week but didn't take pictures. Started by cleco'ing the nose of the ribs, then attached the cleco's on the top of the tank.
Cleco'ed the baffling plate in place with the brackets cleco'ed from the inside of the tank. Closed the bottom skin, then cleco'ed the tank to the wing and drilled the holes through the spar into the brackets.
Then removed it from the wing and drilled the skins.