I thought the 8-1/4 didn't come out till late 70 early 71. Don't remember ever seeing a Charger-Coronet with anything but an 8-3/4 in 69. I changed out quite a few carrier bearings after that time from defects in the 8-1/4. In fact I can't remember seeing any in the 71-72 Charger just the 4-door Coronets. 1973 up, a-b-c base models 8-1/4, e-body 8-3/4. Could be wrong been awhile.