I have a quick question. Are there any case breaks for gear sets? I have a posi unit in the Charger's 8 3/4 489 case. It currently has 4.30 gears. I would like to switch out the gear set to a 3.55, 3.73 or 3.91. I can't find my paperwork on the posi unit so I am unsure if it will accept the gears I want. I know for the Jeeps I have had in the past, their are carrier breaks from 3.73 up. Is the same true for the 8 3/4 or will I be fine ordering any of the above ratios?
I am replacing the 2.76 ratio rear in the Challenger, after Carlisle. Thanks, John.