I have the SBC kit on my 60. It stops every bit is good as my 87 SS Monte Carlo. AND . . . in a straight line. You can be going 85 mph and stand that car on it's nose. It has NO steering pull or other ill effects.
The down side is; the orig 14X5.5 whls won't work. You will have to run 14X7's. I had to have a front swaybar custom made. The orig (little pinner Pinto size) sway bar won't work, nor will the hvy duty bars that the Thunderbird suppliers sell. The calipers in the SBC kit mount to the stock 58-60 spindles, facing the front of the car. They interfere with the swaybar links. I had to move mine forward, only an inch or so. I just have "L" shaped brkts on the frt of my lwr c/arms.
It was a headache but well worth it. With the addition of the rear swaybar, my car handles really well for what it is. Let's face it, these things are tuna boats.
I have devised a bar design using the stock mountin locations. Welding will be req, but this will mount the heavier front sway bar out of sight.
The other option is that drop n stop. He uses Granada type spindles, mounting the calipers towards the rear. You can then use the stock (or) the heavy duty version they sell. To me, that's the way to go.
As far as the master cyl, yep it won't look stock. It dosen't look GM either, even though it is an early 70's Chevelle type m/cyl.
I understand that now, concours rules are, they don't dock you for safety inprovements. Personally , I don't care. "If" my car was in any other catagory than show n shine or "driver" class, it would be in "modified".
But, by all means . . . Change over to disc !!!!
1960 Convertible (Orig owner)