The fronts are 17x7 with 4.0" of backspacing with a 215/45R17 tire, the rears are 17x11 with 4.25" of backspacing and 315/35R17 tires.
The front end is stock for 1972 with the exception of SSBC disk brake kit, which I think adds a little track width. The rear is mini tubbed and the rear end is narrowed, I can't remember the exact width off the top of my head, 46" and some change maybe?