I am looking into this kit too and too me looks worth every cent. check the links below and you can find more of them on hdforums.com
quoted a fella other day to do a 103 thatll get same if not better numbers than a 107 an ya can use your barrels easy to do heads cams ect ended up cheaper than havin a dealer or big shop do it ..i also alowed for geardrives an truein weld crank