Clutch/brake pedal set identification

"Early A" is '66 and earlier. They look like this:
1667175277937.png
Yours appears to be '67-'74, but there are differences in the pedal assemblies which vary according to original application (340/383 differed from slant 6/318); which, from your pictures, appear to be standard-duty sl.6/318 units. Rather than write it all out, here is a link to the differences:
pictures of pedal assemblies 340 vs. others
and
Heavy Duty Clutch Pedal Assembly Value