The aft bulkheads have been clecoed up with the skins (bottom and both sides) In this picture I have clecoed the aft top skin on but that was just to get everything to stay straight while I put the rear tail piece in. That was the hardest part, the piece is thick, and it wasn't pre-bent very well. So it only went in after a lot of trial and error- a lot of clecoing and unclecoing...
The aft fuselage shown here starts just aft of the baggage compartment- which is about 2-3 feet aft of the seats. The J-stringers can be seen on the lower sides- 2 on each side- they need to be positioned and drilled.

Once everything has been drilled, all the parts will be disassembled, deburred, dimpled, and primed before being reassembled for riveting.