I did not use power steering, and remember it was not used by most drivers. It was tried early on but there were reliability problems.
My friend Al Ratcliff built a 69 T/A camaro in 76, which I drove a few times, that was eventually changed to power steering in 79. Remember,
that in later years the T/A races were not as long as in the early days. Al thought p/s was worth 1-2 seconds in lap time,