383 or 440 built into a hemi?

I was just reading a few things on putting hemi heads on a 440. Does anyone know what it would take to build a B block or RB block into a hemi? Would you end up using factory 426 hemi heads, manifold, and headers? Can you do the same thing to a 383 or 400 block? Since hemis are so hard to find and expensive to build a guy would think we would hear more about this build. So any info on what parts needed and modifications needed would be great.
Author: Zach H