I'm not too familiar with the G body stuff but it could well be.
I was looking at :
Front steer= Not early Camaro or Nova
Large nuts on the upper A arm shafts that usually indicate early 70's and up as the older ones had a 3/8 bolt with lock washer and cupped washer on the A arms.
Caliper brackets cast into the spindles. 67/69 Camaro and Chevelles and Monte Carlos to 1972 had bolt on Caliper brackets and steering arms. 73 and up Chevelle size had one piece disk brake spindles.
Maybe someone with a G body clip can post some photos:
They aren't some of my greatest photos but here is a mid 70's Trans Am subframe on a TF frame.
No side shots of the steering box but I need to go visit my friend who has that anyhow and can take photos of it and another one he has.