1968 a body 4 speed pedals

And at least two different style of clutch pedal in 67 - 76. On one the arm is shaped different than the other (perhaps this coincides with the different ratio mentioned above?).

Generally though any 67 - 76 clutch and brake pedal will bolt into and work in any 67 - 76 a body. Do you specifically need 68 vintage pedals for a resto?