Save the whole output shaft and extension housing assemblies off those small block 1965 727's. Keep the park mechanism intact and I would save all the cables unless they are toast.
Console shift valve bodies differ from push button so I would save those as well.
Most guys get rid of the early input shaft and reaction shaft and replace them with 1967 and later stuff as the spline count changed between early and late.

Actually if you have the room - just keep the whole trans - everything can be transferred to a big block case.

You never know when you may need something.

Remember - there is no such thing as a poor junkman.