KH Discs vs 73+ Discs

Well i ended up rebuilding my KH calipers with new pistons seals etc had my hubs made up so i run a BBP wheels and they still use the std bearings dust seals,run 73 & up rotors and could still use the Kelsey Hayes calipers.4 wheel disk brake set up non power.Works well for the street as its no track car.I dont have the luxury of any junk yards to pull later model stuff off and shipping hubs etc adds up $$$$.I bleed the brake system once a year with new fluid to avoid moisture issues,rust or leaking seals.