SS cars arent the only ones that came with disc brakes, I've seen them on customs, four doors, and just plain Novas, my last Nova was an SS and it had drum brakes. Do you know if the spindles out of a Chevelle would work?
Mostly nova's that have them have had a conversion done probally. Spindles out of a chevelle/malibu might work. They are pretty much similar to each other. (GM is good about being able to switch parts from one car to the other anyway.)
1954 Bel Air 4dr 1954 210 4dr 1954 Chevy Bel Air 4dr 235I6/Powerglide 1958 Chevrolet LWB pickup. 235I6/4speed granny 1976 Chevrolet Nova 350/400 4.88's 1976 Chevrolet SWB 4x4 1/2 ton. 350/4speed 33's 1979 Chevrolet SWB 4x4 350/4speed 3/4 ton axles/Tcase lifted, 36's 1981 Mazda RX-7 1996 Ford Ranger SWB Reg. Cab 2.3L/5speed
check out novaresource.org hes done soem pretty heavy info on them and he mentions that theres actually 3-4 different cars that the disc brakes will work off of, cant member them but its wortha reading.
great info on messin with em 2, god i love that guy