I had new wheel wells made as the old ones were rusted beyond repair as well as damaged from blow outs. I am going to replace the side panels as they are torn on the street side and the curb side has small tears and the exit for the old furnace.
I did a weld repair on the water tank as there was some kind of gouging on the bottom that actually got through the plastic. I am still not sure I will use it as it is pretty dirty inside from what I can see. The (metal) filler is in pretty good shape but the hole through the shell for it is torn up and needs a patch.
I will order a new black tank from VTS as the old one is really butchered up. The bath will need a fiberglass repair under the toilet as that is torn.
We are now officially in the windy season so gusts to 45 - 50 mph are common. I have been working on the interior of the trailer when one of those gusts hit and I thought it might go air born. I've bolted the shell to the frame for the windy season. No floor install for a while yet.
As for the wiring, are you splitting off the brake/light harness and running it under the floor but running the 12v
to the vehicle above the floor? I didn't like the leads crossing the frame to get from the pigtail on the curb side to the polarity checker on the street side. I still am far away from physically getting to that problem. I also didn't care for the clearance lights wires coming into the shell at two different points. It may make sense to keep it the way Airstream did it, I am likely to use the idea of the port for water/electrical entry, but the idea of putting the water and 120V entries in the shell is interesting.