Description This kit allows you to run a 71-79 bus master cylinder on a Pre-66 bus. This kit is needed with any disc brake conversion. It also allows people with 67 buses to replace their hard to find and expensive master cylinder with the cheaper 71-79 cylinder. You reservoir part number VWC-211-611-301-E. Use master cylinder part number VWC-211-611-021-AAWe now also offer a DELUXE version of this kit which we import from Germany. The CSP-German kit comes complete with reservoir. To view this and all related parts for this conversion, CLICK HERE.