I just ordered a bunch of parts direct from Classic Performance Products. I got the 1.125" bore dual reservoir master, with a 8" booster, adapter mount, Proportioning valve that is what the guy calls "hybrid" meaning it can work with either disc/drum or drum/drum systems, and the remote cover for the master which has two inlets that you feed from one remote reservoir on the firewall. So its all under the floor except the remote reservoir. $421 without shipping.
A lot of the Ebay kits are 1.00" bore and some say only for automatic transmissions. Some say "for disc/drum" which begs the question: what about drum/drum.