Need help with parts!

the cals and rotors for the 4 inch pattern are EXPENCIVE! i have them stock on 2 of my cars and they are not easy to find. most places only go back to 73 in their partrs listing and you will need to find a place that goes back past 72. i know checker/schucks/kragen carries tthe cals but they are special order and roughly $150 EACH! also Stainless Steel Brake Co. makes them but they are even worse.