This site has some awesome in-depth detail regarding oldskool Fords, partiuclarly XA-XCs. Most of the "normal" info on Falcon models can be found at other sites, but the amount of detail put into discrepencies between, and within, XA, B & C model Fords is amazing.
(sections "Bits & Pieces", and "Details 1, 2, ...")
GO TO THE DAMN SITE!!!