I am not a Poly expert, but I wonder what the advantage could possibly be to install a Poly in the Cuda. The LA seems to be a much better choice to me.
The poly is a torque animal. The individual intake an exhaust ports just work. I think most of them came from the factory with the solid lifter cam also.
My dad absolutely loved the 318 poly. He always said it was the best motor Chrysler ever made. He was not into performance he was into reliability.
I think if you look at the main webbing of the block you will see where it has holes between each section for windage control.