Since all the currently available "production numbers" are based on percentages (to 0.1%), none of them are CONCRETE.
Since the "Option & Accessory" reports were created by humans, errors exist.

1968 Charger & Charger R/T manual transmission numbers (US spec.):

Charger (74,886 built)
/6 Charger = 904 (0.1% = 1 +/- 0)
/6 & 3-speed < 0.1% (less than 1)

V8 Charger = 73,982 (0.1% = 74 +/- 37)
318 & 3-speed < 0.1% (less than 37)
383 2bbl & 4-speed = 0.1% = 74 (37 to 111)
383 4bbl & 4-speed = 0.4% = 296 (259 to 333)

Charger R/T (17,584 built) (0.1% = 18 +/- 9)
440 & 4-speed = 15.6% = 2743 (2734 to 2752)
HEMI & 4-speed = 1.2% = 211 (202 to 220)

I have somebody's translated '68 Charger "Option & Accessory" report, and I may have mis-interpreted their interpretation.
Any math scholars see issues in my logic or lack there-of?