I should have the rest of the parts in for my hyrdoboost conversion today, I can't wait to install it. I am going to do it in a couple of phases until I get it the way I want it. First phase is straight up GMT400 hyrdroboost with the abs intact, and everything factory. If I don't like this, I am going full on GMT800 hydroboost with the newer style spindles/knuckes and rear disc. I will use the GMT800 prop valve and run 1/4 inch lines to each front wheel, no adapters or any hack like that. I will build or buy the 20mm rear spaces and likely not use the ABS on the newer one unless someone can tell me how to use my wires and wire it up. But at that point, I would be 1/4 inch brake lines all around.