VIPER CALIPER BRACKETS

The key parts needed are Mercedes rotors which range from $25 and up from rock auto. The center bores are very close to the mopar bore but they need to be opened up to 2.780”.
You will also need a hub. This is 73-76 disc rotor with the brake surface machined off. Rotors to make the hubs are cheap too as everyone knows. I can provide the hubs and rotors if someone wants, but these are pretty easy items for any local machinist to do.