10D Build date the fourth week of October
67 =====> 1967 the model year
16487 ===> The model of your car which is a Impala Hard Top Two Door with a V8
314 doesn't exist so I am thinking it reads as an 814 denoting a Black vinyl bench seat.
2 The interior code which should be a letter not a number is probably the letter "Z" which in 1967 indicated bucket seats. Problem is the factory interior code for black buckets seats was 810 or 813. This is why a photograph (preferably in focus) of your cowl tag works better for this. (it also rings Paul's bell because he is establishing a data base of cowl tags and original documentation). So give us a clue as to what you have now installed as to color and seat type to see if we can match it up.
C ======> Group 3 Option code for a padded dash (instead of the standard painted steel one.(hard on the face in an accident)
08 No idea
BA =====> Assembly plant code for Baltimore, MD
O5638 ===> Fisher Body sequence number (no bearing on the VIN what so ever)
BODY ===> What we are attempting to figure out
RR PAINT => Paint code for an all Bolero Red car (top and bottom)