The cable rigging is a bit interesting, described further by Jared341 in this post:
http://www.chiefdelphi.com/forums/sh...7&postcount=18. The drum was not designed, but with this setup, you don't need a 2-stage drum.
Cable is Dyneema, as 254 has used in the past. Bearings are R3 bearings, as used by 973 and show in the RAMP videos.