don't think there's a difference as floor pan, seatbelt mounting points etc are all the same. Is it a bolt in? The 1/2 cage I have is suitable for both 2 and 4 door GC8
The seats and steering are moved further to the rear also with that cage[quote author=niall1 link=topic=17835.msg218149#msg218149 date=1252418911]
Normally they are well behind the seats: