Rear seal for A230
I have 8 A-230 (aka NP-230) 3-speeds here.
The A-230 A body versions use the same rear seal and smaller driveshaft yoke as the A904 automatic.
The B and E body versions use the same rear seal as the A-833 4 speed and the 727 automatics. These use the larger driveshaft yoke splines, but they can have the small or large u-joint size depending on application.