Same animal as a 1967-69 Camaro; read that integral PS from Chevy.The "Power Assist" is 1st and 2nd gen only.
3rd gen and up, I believe use a power steering box and would be a "power steering".
Someone will have to comment on 3rd gen and up setups, as I don't own one.
(but I believe it is just the pump, steering box and hoses ??)