[RAREV8]

Just a couple of corrections- all XC's had round lights- basic models only had a pair (one either side obviously!)Rally pack and GS models had quad lights if optioned and only Fairmonts and Fairmont GXL's had square front lights whether sedan or coupe. No Fairmonts utes were made.
XB's again had a pair of front lights unless they were a GT. Not all GS's had quad lights- this was a further option, not part of the standard GS pack.
There are a lot of fundamental differences between the XA-XB and the XC's....completely different interiors, dashes, gauges and wiring. XC's were revised in 1977 (XC and a half) which offered radial tuned suspension but outward appearence remained the same other that the revival of the blue oval ford badge on the grille....this badge had not been used for quite some time- someone may remember waht the last Aussie model was that sported this!
Coupe rear lights were different too- I'll let someone more knowledgeable than i explain this!

Cheers, Jamie