I've got a Sprint damper that I'm going to fitting to my NSR shortly, and I've used them before. Decent cheap alternative to the usual Ohlins, WP etc. I bought it for a different bike but theres enough stroke on it to run it on the NSR, as long as I set it up in the middle of the stroke. As long as its got enough stroke to go lock to lock it'll work fine.

Demon tweeks do fork clamps for about £20 I think.