@User: You'll want to look at this: https://docs.google.com/spreadsheets/d/1oL6ldkQdLu-4FEQE0lX6BcgbqzYfNnd1XA8vERe0vpE/edit#gid=242535867 to which I added a new sheet "Layer Resistances and Capacitances (ReRAM)". The change in the stackup is simply that Metal2 and everything above it is raised by 0.295um. The via1 layer then gets doubled in height, and so its resistance doubles as well. Those are the only stackup changes.