I test ran the brake lines to cut them to length. I drilled through the 2 holes in the firewall that had had the previous brake cable going through them. They are rough, so I need to clean them up and add grommets or some kind of protection for the lines.
Then I rough-cut the old brake handle to length. I first sat in the cockpit and figured out where it needed to be. I'm reusing the center of the 3 previous holes, for the new attachment point.