Check the listing for details. 1955-58 Chevrolet Front Power Disc Brake Conversion Upper and Lower Slotted. Condition: New, Made in United States. Listed at 600.00 USD. Pn# -5557CBKSX- BRAKE LINE CONVERSION KIT1955-58 Chevrolet Bel Air Front Disc Brake Conversion With Cross Drilled And Slotted RotorsMade in the USA1955-1958 Chevrolet Car (all Models) Power Disc Brake Conversion Kit, 15" Wheels. Re-uses existing spindles - Keeps car at stock height.Comes with everything in the picture - all the parts to do the lower disc brake conversion. You re-use you existing spindle so you dont have to take the entire suspension apart. The kit comes with GM Loaded calipers, Cross Drilled and Slotted Disc Brake Rotors, Caliper Brackets, Brake Hoses and all the hardware - banjo bolts, bearings, seals, clips, dust caps and bolts. And the upper kit with 8" dual booster, disc/drum master cylinder, disc drum prop valve, valve bracket, valve lines and bracekt.