So after tearing apart the tranny and rear end, The pinion bearing is the winner!
Totally and completly shredded to pieces, it only has about 8 ball bearings left. I guess i should be happy it lasted a good 54 years now...
I guess its time to order that 3.55 set of gears and enjoy going more then 50 mph. Darn I have to order more parts.
Jeff