it sure looks like the line going into the brake master has a 9mm to 10mm adaptor, so the original line would have the smaller fitting, thus making it older than 1972
the firewall rib has been modified also, the part that goes up under the clutch master is not original
you can check the bolt pattern and spacing of the 4 bolts in the firewall to see if it matches up with a booster.
the firewall rib has been modified also, the part that goes up under the clutch master is not original
you can check the bolt pattern and spacing of the 4 bolts in the firewall to see if it matches up with a booster.