If I were starting with a clean sheet of paper I would do a 9" with NO FACTORY FORD PARTS and you would be further ahead twocents
One of these years I'm going to pull the Dana out an put a 9" back under my Savoy. Much easier to work on and change gears thumbs
Gus beer

64 Plymouth Savoy
493 Indy EZ's by Nick at Compu-Flow
5-Speed Richmond faceplate Liberty box
Dana 60