Getting ready to hot tank block

I'm stripping down my 360 for a rebuild and will be getting the block hot tanked. I know I need to take out the freeze plugs and oil gallery plugs on the back of the block and I'll be getting new cam bearings fitted.

I have two questions:

I seem to remember reading somewhere about another plug in an oilway that needs to be removed but don't know where it is or how to remove/replace it?

Does the oil pump drive bushing need to be replaced after hot tanking? If so where can I get the special tools to remove/replace it?