Decided to go Full Float Rotor (Front 180 and rear 160) for the Frankenbike. can say that after last weeks Kamensah ride that the full float rotors does make a lot of difference when you do very demanding down hill ascends as it does help with the cooling of the rotors and this results in less fading of the brakes, Plus it looks so cool on the frankenbike.
Picture of the 160mm standard fixed 1 piece rotor previously installed on the bike. Yes the Avid HSX is about 3X more expensive then the conventional 1 piece rotor but it performs so much better.