The first US Turbo's, I believe were the "Turbo Carrara" offered in 1976, and my guess yours would fall under an early version. Check your owners manual, or give Pelican Tec Support a call; and before you purchase or order wheels talk with the local shop that knows and works on your car. Has the car been lower, camber changed, etc.
But it will look cool in RSR trim!
art