Yes, I've used the speedway kit as well as the ECI kit. Which is the same as the speedway kit at twice the price. Upgrading to a modern master cylinder is a smart move usr the 73/4 Ford MC made for non power brakes.
The Ford Pickup in 73 had optional manual disk brakes. In 74 they became " Power" disk brakes. It was recommended to me to use the "Manual" MC. I did and they work fine. However. I now have "Manual" disks on all 4 wheels. The brakes work fine, but the pedal pressure is quite high. I can either change the MB or the Pads?? Not really impotent right now, But when other people drive the truck, they don't realize they have to push hard to stop. My Son and helper Rob, have no trouble locking them up.
My spell checker is illiterate.
One more time I wish we had a "Like" button on here similar to the one on the H.A.M.B.
It would cause major heart failure, but it would be nice to have the HAMB setup, a lot of nice features.