[1928 Sport Coupe]

Is the generator rear brush plate with a bearing interchangeable with the plate that uses a bushing, as long as I use the armature that uses a rear bearing, and the correct bearing? I do have a rear bearing plate and armature that matches.
I thought I saw somewhere the long generator with a rear bearing was used from Oct 1928 to April 1930 on Model A's. My car is marked 11-??-28 on the gas tank, the day may be a ?4.

Thanks for any help