Application : Chevrolet Bel Air Disc Brake Caliper Repair Kit. 1968 Chevrolet Bel Air Bore: 2.9375 In.; 1 Piston Caliper; Position: Front;. 1969 Chevrolet Bel Air Bore: 2.9375 In.; Position: Front;. 1970 Chevrolet Bel Air Bore: 2.9375 In.; Position: Front;.