Not difficult work, just very tedious putting in many, many, blind rivets.
35-2, Step 5
Cleco the F-1016C-L Floor Pan in place then rivet the floor pan to the F-1 016-L Outboard Foot Well Rib, F-1016F-L Inboard Foot Well Rib, F-1005A Rear Spar Bulkhead, and F-1004B Center Section Bulkhead. Blind Rivet the floor pan to the F-1016B-L and -R Floor Stiffeners
35-2 Completed per plans.
Left rear floor pan
Right rear floor pan
Both rear floor pans viewed through the windshield