It seems to me someone with a lathe and the right combination of skill and courage could probably create one, similar to how Crane made the 2-piece small block cores that were used in MP crate engines.

I think it might be a problem to get a person who is inve$ting all that is required in a Hemi to accept the 2 piece design held together with a roll pin, though.

It could be done.
I don't think I would want it in that caliber of an engine, though.