I do have them on my 68 but I do not have 4 piston calipers. I did have 69 Nova disks on it for a while with no problems though. Mine are Torque Thrust D's which cleared the calipers fine. 15x7 on all corners (I cannot remember backspacing but its on the boxes if you need me to check) I run a 215/65/15 on front to match the height of the 245/60/15 on the back. Anything taller on the front with a 15 inch wheel and you will have to remove the top bolt from the inner fender or you will hear an aggravating rub at times. People tell me they like the 15's on my Nova but I like the look of a 14 with more rubber personally. If I ever change I may go with 14 inch TTO's and go with a 6 inch wheel up front. I only grabbed these since they weren't picked up by a customer at a wheel store. I couldn't pass up the deal at the time.
The same wheels when I had them on my black 68. Only difference is the weight of the 396 vs the small block in the blue Nova. I borrowed the wheels since i'll likely never put the black car back together again... The disk brakes were on the black Nova.
I had been playing with springs up front on the black Nova so I cannot remember what was on the car when this photo was taken. I think it was the tall moroso trick springs
Tommy