[RTdroptop]

I have a 70 R/T with 11 x 3 drums in front. I also have a donor big block '70 K-frame with the original (but very rusty) disc brake set up. It has the rotors and calipers still on the spindles. With cost being a deciding factor, am I better off using the '70 style disc set up I have or should I start looking for the more popular and efficient '73 and up style? I have 14 x 7 Cragars on the front with brand new 245/60/14 tires. I think there is a spacer available to move the rim away from the caliper.