Viper break kit help

If that is a for sale picture then all you need is the 11.75 rotors and your 1974 drum brake knuckles. I'm not sure what those sleeves are in the picture, they look like bearing sleeves? You do not need those since you have the correct knuckles.

You'll also need new hoses since the factory ones won't work. There should be instructions that come with the kit that give you all of the part numbers. You'll need to run 15 inch disc brake rims with the big bolt pattern.