No seriously, do *I* seem like the kind of person that would take an angle-grinder to an Antique?
(You're god damned right.)
The Aluminum extrusion channels could work, but somehow that seems kinda wrong for modifying pressed-steel toys. I was thinking more like tie it all back together with chunks of Mild Steel and some Argon. I really do like the JB Weld idea, that's way better than trying to form filler chunks with hammer & dolly work!
So um, i guess a Ferd Semi to drag around some old trailers might have pushed in front of that little Chebby U-haul... but then i've gotta think about Single or Tandem axle rig?