No, this floor mat is for '73 to '78. As covered
earlier in the thread, the TOYOTA logo in the heel pad area is done away with due to copyright reasons, so the heel pads resemble a late model design.
I'm not totally sure if the mat works for earlier years.
This post talks about the differences in the floors, but someone with the early trucks will need to weigh in on whether it's enough of a difference to pose fitment issues for the floor mat.
The '79+ mat is quite different for sure. That'll be another project for another day.