I've never liked the power brakes in older mustangs - Too sensitive for me. But when I decided to convert my '65 to granada discs, I figured I'd need to go with power. Since thats a little more involved on a '65 than it is with '67-up, I decided to try it manual first, and I'm glad I did. Feedback is much better than with the power booster, and when I added Porterfield Carbon Kevlar pads, the effort was decreased some while adding major brake force. Note, however, that my car weighs 2780 lbs, and I'm thinking the '69 is quite a bit heavier. Still, since it's not that difficult to add power on that car, I'd try it without first and then add it if he thinks he needs it.