I had this left over from a 55 Chevy 210 project I had. Im cleaning up my garage, and selling extra parts from past projects. It was only taken out of the package for photographs. $199 and Ill cover the FedEx shipping. If your interested call or text me at NINEsevenTWO-989-4OO3 or email me at smalltownspeed@hotmail.com Here is the original description from when I bought it: ______________________________________________________________________________ 1955-1958 GM Full Size 7" Chrome Dual Diaphragm Power Brake Booster Conversion Kit with Chrome Aluminum Master Cylinder & Proportioning Valve Kit for Front Disc Rear Drum Brake systems. 7" Chrome Dual Diaphragm Power Brake Booster Chrome Aluminum Disc Brake Master Cylinder Polished Stainless Steel Firewall mounting brackets Pedal Attachment Rod Disc/Drum Proportion Valve with mounting brackets and Stainless Steel lines