I plan to switch from the original single compartment master cylinder to a Dual compartment Master Cylinder for safety reasons. Does anyone have any information on where I can purchase the proportioning valve and lines? The Dual Master came with the vehicle. I want to do the front brakes separate from the rear just in case there is a line or wheel cylinder leak. don't want to go crashing headlong into anything! Heard there was something in Speedway, but haven't looked at it yet.