Performance Online 1966 Chevy Belair, Impala, Biscayne, Fullsize Car Front Power Disc Brake Conversion kit uses large D52 GM Calipers and is great for small rim and tire combos. These kits are everything you need at the wheel to convert to disc brakes on your 1966 Chevy. Mounts to your original spindle making installation a snap. Works with factory 14″ disc brake Rally wheels and aftermarket 14″ wheels designed for disc brakes. 15″ wheels recommended.