Rear seal for A230

This is all very interesting. The original poster has a 1970 Duster with an A230 that made use of the smaller output shaft seal, yet that same seal was too small for my 1975 Duster’s 230. That would indicate that a change was made along the way, and from what I’ve been able to find so far it seems 74 was the year. But I don’t have access to the material Alaskan_TA does. I wish I did.