1) Yes you will need a new hub. At a guess, your hub wont have the disc mounts on it. A good one to go for is the Hope XC. Basiclly the same as that Echo one, but half the price. 2) '32h only' means that that the hub only comes with 32holes. So you will need at 32h rim for it. But pretty much all front rims are 32h, so nothing to worry really. 3) If your forks don't have a disc mount on them, then you will need to change your forks. Stock forks - Echo urbans seem good. Really light and strong, with 4 bolt mount and disc, or V brake and disc available. - I think. Two of my mates use them, and have had no problems. Mod forks - Echo Easy/Lite forks are good. Nice and light, but not the strongest. Come with 4 bolt mount, and disc, or disc only mounts. Or Echo Team forks. Nice and strong, I think they're pretty light? Bit more expensive than the Easy's...