'67 Master Cylinder

[Sixties Guy]

I have a '67 GTO with '69 style power disc brake setup. the master cylinder is a fairly tall and squarish unit that has rubbed a hole in the molded hood pad and appears to be very close to the hood itself. This was a parts store replacement that was put on the car by the previous owner. (it works fine)
In various restoration books I have seen pictures of shorter, rounder master cylinders that don't look as tall as mine.
Does anyone know what year cars these are used on and if they'll work with my setup?
Thanks for any info.

[Sixties Guy]

I have a '67 GTO with '69 style power disc brake setup. the master cylinder is a fairly tall and squarish unit that has rubbed a hole in the molded hood pad and appears to be very close to the hood itself. This was a parts store replacement that was put on the car by the previous owner. (it works fine)
In various restoration books I have seen pictures of shorter, rounder master cylinders that don't look as tall as mine.
Does anyone know what year cars these are used on and if they'll work with my setup?
Thanks for any info.