[gtxb67]

the 1973 fred gibson car was given to allan
the spare car was given to fred
allan would have started 1974 in the ex fred gibson car
the b52 was a brand new xb gt that was built in the states during 1974 and first raced at sandown of that year
maybe the no 2 bathurst placing car was the ex fred gibson car
there are plenty of rumours that the 1977 1-2 cars were xa's. i believe allan's car of that year had to be an xb as there were two brand new cars built as xb's (projects b52 and phoenix) and why if he had a 1976 build xb would he choose to race a 1973 build xa
as bearman has stated the cobras were the previous years coupes but allan's car had xc quarter panels fitted (weight saving perhaps) and that is why the bathurst museum car has horizontal indicators instead of the verticle ones that were on the vehicle in 1977


edit: it seems that project b52 was the ex fred gibson xa that was taken to the states and rebuilt