I removed this C8OZ-7534-B green clutch spring from a 69 with a standard 302. This is from the clutch pedal arm under the dash. The MPC lists C8OZ-7534-A (brown) for 351/390/428/429.
Is the green spring used for the Boss 302 as well as the standard, or does the Boss get the brown spring?
It is interesting to note that a potential source for the brown spring is all 72-73 Mustang applications, including 6-cylinder and 302. Also 73-74 Torinos as well, but I suspect that Torino manual transmission cars are not easy to find.