Yes, mine goes across the firewall. Don't go by the illustration, it's generic. I got my lines about 12 or 13 years ago and they ran exactly where the originals did. My calipers on on the rear of the rotor, behind the steering knuckle. The lines come out in front and then the hose runs across to the calipers. It's a '79.
I poked around in the garage and,,,,,,,,,,,,,looks like I must have tossed the lines from the kit. Didn't look up in the attic but it's HIGHLY doubtful they'd be up there.