What's needed to put in a 8BA replacing a 59A

[dad's deuce roadster]

As always, I plead newbie status here, so please bare with with me.

Per some of my other threads, due to a crack in the block of what I assume is a 59A engine (see avatar) in my fathers 50's hot rod 32 roadster, the replacement block we have found is an 8BA. I have questions about what we will need in addition to the block to use it.

I know we'll need a bell housing. I have found there is more than one style. What do we need to check to ensure we get the right one?

Is there anything we will need in addition to the bell housing to bolt up to the transmission? I assume the transmission is the 32 original, but if not, would there have been any other 3 speed transmission put it this prior to about 1956 which would make a difference in getting the right bell housing and other parts, if any, to bolt to the tranny.

The 8BA doesn't have an oil pan. I assume there are reproductions. Are any very good or should we hunt for an original.

Lastly, we plan to use the Sharp heads that were on the 59A (again assuming that's what it was). I have read that some mods are needed to put 59A heads onto a 8BA block. The mods deal with plugging a couple water ports on the block and one on one of the heads, which seems wierd. It is correct?

I think that covers my questions. But if there are any other issues, please let me know.