Most of the differences listed above arent correct.
My friend has spent today and yesterday stripping a 1.6 Sierra 3 door shell compeltely to bits, as we are using it to reshell my 3door that he crashed.
The ARB brackets are there, as are the rear seat brackets.
The double skin is there too
Thats on a compeltely original nasty reddy brown colour A reg shell.
The only differences mentioned in this thread which are actually true are:
No ABS hole
Vetical vs Horizontal towing eye