I wonder if both styles were used in '65, perhaps depending on assembly plant? My low-miles '65 came to me with the straight type, not the "S" type, and other low-miles original '65s I've nosed around in have had the straight type. I have seen some original '65 Australian-built cars with the "S" type, but have not seen an original '64 with the "S" type. It certainly does not help with this question that they didn't bother changing the part number (1828 352) when they changed from the straight to the "S" type. :-(
