Early (65) Torqueflite Questions

Comments inside the quote; sorry I couldn't help more
I am rebuilding a 65 vintage Torqueflite for a friends 64 belvedere and have a few questions...

1 - the 65 and 66 rear pump slip yoke autos used an internal seal on the output shaft and a grease lubricated yoke with a vent hole. Can I leave the internal seal off the output shaft and run a conventional atf lubed slip yoke?
If you can install the seal at the end of the tail,I don't see a problem
2 - are all cable shift valve bodies the same, or are push button ones different from cable column and console ones? IDK

3 - has anyone done the conversion to larger late style reaction and input shafts, and if so is there a preferred date range of parts to use? I assume the pump, reaction shaft and input shaft all get changed? IDK but I agree. I think the 67 to 72 stuff is a good candidate. Don't forget to fit the TC hub to your crank.

Any other advice on building a percormance 65 vintage torqueflite? The intention is to have a slip yoke button shifted trans.I imagine that is doable

Thanks!