My front seal on my fordamatic is leaking and I was told not to change the seal unless I change the bushing as well. I have the seal but I'm having trouble identifying the bushing that I need, I've been told it goes inside the pump body. I have a book that list a few transmission bushings. Input shaft #7120, transmission front oil pump #7B258, bushing front pump gear drive #7B259, bushing-transmission output shaft#7B256 and bushing-transmission planet support #78132.
I have no idea which number is correct or where to buy the bushing.
Does anyone have the answer?
I would appreciate your help. I have a 55 Fairlane 272. Also I know these are not the whole part number I need so help there would be appreciated as well.
Thanks

Claim to fame is the car was used as an extra in the movie Diner with Micky Rourke, Steve Gootenburg, Paul Riser and Kevin Bacon.