If you do the swap make sure you save the drum brake knuckles from your '74. Those late model drum knuckles are worth money to guys who want to put Viper disc brakes on their cars. The big 11.75 rotors fit on the drum brake knuckles and then there is a conversion kit that mounts the Viper calipers to the drum brake knuckles. So don't throw them away, put them up for sale.















