Charstar604

Hi All, I recently purchased a Z without an E-brake system. It currently have a 300zx brake caliper system installed. I've searched all over the place and cannot find an E-brake system. I've seen Wilwood kits that has an 'option' of adding an E brake. No where I can find that sells just the E-brake though. Do I have to purchase an entirely new brake system to just get an E-brake? Thanks for your help!