1969 Charger R/T:
440HP 4bbl engine * 727 automatic transmission * 8-3/4" with 3.23:1 ratio non-sure-grip was STANDARD

the 4-speed manual transmission (18-spline) was OPTIONAL at NO-COST (no-charge)

if you chose the 4-speed manual transmission, it was mandatory that you purchased an OPTIONAL "axle package"
A33 = 3.54:1 DANA 60 - $142.85 (includes 26" radiator)
or
A34 = 4.10:1 DANA 60 - $256.45 (includes 26" radiator & power disc brakes)