I'm getting conflicting info from my 3 Genuine FoMoCo Books (Shop Manual, V6 Maintenance, and V6 Owners Booklets)
 
2 of them say Fuel Tank is 10.5 gallon and one says 13.5 gallon ??
 
Is this a typo or was Mk1 produced with 2 sizes ?? (10.5g for 4 cyl and 13.5g for V6 ??)
 
Can anyone shed some light please ?

The 4 cylinder ( 1600 cc)  has always been a smaller capacity tank than those fitted to the  6 cylinder ( V6)  models

Yes, gtcapri is right, all 1600 Australian Capris used the smaller sized fuel tank, whereas the V6 used the larger 61 litre tank.

 
 Thanks Guys for another anomaly cleared up !