Editing Upgrade factory novs disc brakes

Hello, I just purchased a 1970 Nova that has been dismantled by the original owner. The car has factory disc brakes in the front and I would like to upgrade them to a larger rotor. Searching the internet I see alot of conversion kits to go from drum to disc but I really haven't found an upgrade kit for existing disc brakes. Does anyone know where I could find this type of kit and if there are multiple suppliers, which brand do you recommend?



'''Try Baer brakes''' they should be able to fix you up with parts - kits.