Yes, that's what you need. I
think there might be an adapter to fit Konis though, so check that out.
Adjusting shouldn't be too hard (I can't say for sure because I don' thave them). Keep them oiled so they don't rust. You loosen the hold down and turn the adjustment ring to get the desired heigh, and tighten them down again AFAIK. You'll probably need to take your wheel off.