Check the listing for details. Universal Power Brake Pedal Assembly Firewall Under Dash Mount + 1" Bore Master. Condition: New. Listed at 138.99 USD. Universal Power Brake Pedal Assembly Firewall Under Dash Mount + 1" Bore Master Descripton: Brand New Black Universal Firewall mount brake pedal assembly with a 1" Bore Master Cylinder. This will work with power brakes. Brand new Black Bail top master cylinder. This master cylinder is the Bail Top Style & has a 1" Bore. 9/16" & 1/2" Ports on each side.Mounting holes measure 3 3/8" center to center. This works great for most drum/drum, disc/disc or disc/drum applications. This is a four port master cylinder, so you can use the ports on whichever side you need and block the others. It includes plugs for the ports you do not use. This is a great upgrade over a standard GM style master. Brand new heavy duty black Universal Firewall Mount Power Brake Pedal and Bracket Assembly. This universal firewall mount power brake pedal conversion kit is used to mount your brake booster and master to a more convenient firewall location. It will accept the poplular OEM or aftermarket 7" or 8" power brake booster with a 4 bolt pattern measuring 3 3/8" center to center. The arm is threaded 1/2"-20 to mount a pedal pad and the pedal arm can be adjusted in 1-1/2" increments (Pedal Pivot Point adjusts to 7", 8-1/2", 10", 11-1/2", and 13" ... total length 14") to get that fit you need for your vehicle. We also have this available in our store with the booster and master. Package: As shown in our pictures Professional Installation is Highly Recommended. (No Instruction Included)