Dave,

looks like Cass has what your after.


https://www.doctordiff.com/8-1-4-ring-and-pinion.html

1970 Challenger T/A
1970 Roadrunner RM21 Vcode
1971 Gtx
1971 Satellite
1971 Charger 500 GB5 383 A54 car
1972 Satellite
1997 Dodge 1500 hunting rig
2014 Ram 2500 Mega Cab