This steel brake line set makes plumbing your classic after a disc brake conversion easy as pie. You get the front line from the proportioning valve to the caliper hoses and the rear line from the proportioning valve to the rear brake hose. The long line runs outside the frame. You also get the hard lines that go across the rear end to the wheel cylinders. Designed for power disc/drum conversions but can be modified to use with power disc/disc conversions. Danchuk # 10122 will work on any 1955-1957 classic Chevy with a power disc/drum brake conversion.