I was able to dissect the old centering bushing and install it into the new driveshaft.
First remove the circlip, then I lopped off the nose of the old 4 speed flange with a cutting wheel…being careful not to cut the spring inside. Then I could drive the press-fit portion back out the front using a socket as a punch.
Cleaned it all up, added a little grease, and put it all back together in the new driveshaft.
Kinda neat how it all functions…it’s a spring-loaded ball and socket joint, just like Tzei said.
Ed Z