74 Duster 4 speed adjustments

Is it a real 360 4 speed car? Pretty rare if so.

If not (and sometimes even so), could be that the wrong pivot mount was used on the bellhousing side. Pretty sure a slant 6 mount will bolt up, but not be in the correct position. I will look at how mine mounts after I drive it home and see how it compares.

Pretty sure the factory procedure for the clutch was 1" of free play at the pedal. Have you adjusted it that way to see how it works?