I have a setup from a 2001 Silverado, same part numbers as dwcsr in his write up. He also mentions in his write up something about master cylinders having different metering valves. I found a
YouTube video speaking to this at 1:50 mark. Like I said, I have a disc/disc setup, so was wondering about this proportional valve on the side of the master cylinder. Not the metering one, but the one on the hydroboost setup as the video eludes to.