1963 Valiant Disc Swap

Small bolt pattern....'66-72 Kelsey Hayes is the factory setup. '73-6 for the big bolt pattern factory stuff. There are all sorts of threads here on what all you need to get and do to make each system work for your car. There's also several companies that make aftermarket disc brake systems for your car. I'd start by deciding what size wheels and tires you plan on using and go from there.