So I guess they make the external skins at one plant and transport them to the final assy point to have the internal structure added to build the wing / spar assy?
Pretty amazing stuff, that would be like having someone ship you fully molded wing skins, you add all the internal structure made bt various other parties, add powerplant packages, mate it to a fuse / tail assy, add all the extras, -- and then Fly Around In It!! Taking off like a chopper and the transitioning to 200+ mph, Igor amd Bell are smiling.
Saw a V-22 do a take-off / climb out and pattern circuit to touch and stop in Alburquerke a few months ago - Unbelievable sound and sight to behold.