Modern replacement inner seal rear axle 1933 Plymouth PC/PD

I've now been told that an SKF 12773 metric seal will replace the inner axle seal on a '33 PC or PD Plymouth. The old one was removed but you MAY be able to stuff this one down on top of the old one and not have to dig out the old one. Apparently 1933 stands alone on this seal size as 1934 PE is different. The outer seal replacement,with a modern seal, can be found on Tod Fitch's "Plymouth:The First Decade" site.