I'm in the same boat as the OP, I planned on external but would like to keep it simple.
The project is a mild 470 bracket motor (650 hp max) Do all of the pans mentioned clear a 70's A body steering linkage?
I always thought you had to have a modified/deepened #187 pan or a Milodon super stock pan with the hole thru it.
Thanks for the help on this.