I'm only starting to gather the parts for mine, but... Rams are coming from Surplus center.
Orbital, pump, reservoir, and rear-steer valve are coming from either PSC, or Station at Performance offroad systems.
Lines will be done at the guy in G-boro in the vendor referral section. EDIT: Alliance HTW
There have been a few orbitals on here for sale that would be perfect if you don't need/want a load reactive unit.
Get familiar with the "Hydro steering bible" if you want some theory and "why it works" before you buy... at the very least it'll let you speak more intelligently to a vendor.
HTH.
