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Here is the break-down of your cowl tag:
10D - assembly date.
10 = October (1966) and
D = 4th week.
ST - Style.
67 = year,
16639 = Caprice 4-door hardtop.
BW - assembly plant.
BW = Wilmington, Delaware.
01188 - sequential number of the body style. 1,188 Caprice 4 door hardtop body style to roll off of the assembly line at Wilmington.
TR - Trim.
817 = Caprice bench seats, color: Black.
E = Headrests
L2 - Lower/upper paint.
L = Tahoe Turquoise.
2 = Black top, vinyl.
0173 = Plant info, unknown.
B80 = Bright roof drip molding
C75 = Comfortron Air Conditioning
C08 = Vinyl roof cover
What conflicting information are you finding?