I've noticed that the USD conversion is very well documented on this site as well as
www.svrider.com but there is very little info available for the RWU forks. I'm not even 100% sure yet that the head bearing from Twin Works Factory will work with the RWU triples. About 90% sure, but you know how that goes
From what I've seen, the Hall effect sensor is indeed the way to go, mounted to the fork leg with magnets in/on the brake disk.
As for the rear shock, I fitted an Ohlins SU852 remote res shock about 1500 miles ago and it is the biz. The stocker was like riding a 50 year old pogostick by comparison.
Niels--As I mentioned, I'm afraid I don't have much information on the RWU conversion because no one here in the US seems to go for that one. I would check with
Zoran over at TWF. He should be able to tell you if you if his bearing kit will fit, if are unable to locate the needed information by searching the boards.