The one piece and my two piece bracket kit both use Chevelle rotors, just different bracket system and the large GM single piston caliper. I also use the early Chevelle/Camaro(69-72 Chevelle and 69 Camaro only) calipers because the hose orientation is in the correct position to keep the brake hose away from the coil spring. Most all use the 1970-81 and newer big caliper due to it's readily available nature, but the hose points towards the coil spring and often is near to getting pinched by the spring. So you could just change brackets and calipers, probably need hoses also with mine since they are early 7/16" banjo, not 10mm. You'll gain back all the turning ability you lost with that 1 piece kit since the steering arm is in it's orig position.
The Zero Offset is a 2 piece rotor (hat) and hub assy, no OEM rotor works to do this. I use a fully machined steel hub, I don't care for the alum hubs on the market. Every one I have seen/tested was made out of 6061 which is way to soft for a hub and with the expansion rates being different between the alum hub and steel races, spinning a bearing seems inevitable to me. Race cars use alum hubs but they check/change their components frequently. A 4000lb Impala driven on the street needs strong components.
I don't come on this site every day so you may want to read my ads and call me if you need more info.