Brake Pushrod for 70 Duster disk conversion

They say the manual brake rods are the same from 67-76. I just swapped my 69 barracuda from front drum to disc and could not get a good pedal. Thought it was air in the lines, but after ALOT of bleeding figured it had to be the master cylinder. Got a 2nd new master cylinder and same issue. I ended up comparing the brake rod from my 69 barracuda to my factory front disc 75 duster and it was 1/8" shorter. I ended up buying an adjustable rod and and adjusted it to the length of my duster rod and now I have a great pedal. I went with

Right Stuff Detailing Brake Push Rods RC14