The 8 1/4 thread
Ok got some bearing numbers for you all.
Carrier bearings
Small tmk set 45 consists of lm50349 and lm901310
large- set tmk-47 consists of lm102949 and lm 102910*
Pinion
Small M86649/m86610*
Large lm60349/lm60312*
* numbers came off the bearings races removed from a 1974 dart se rear with the larger bearings.