I have an SE that im taking the clutch and gear box for my R (decided against the suspesion after trying it out, the stock r stuff felt better) I think you bought the chambers and rear subframe from me, If i recall the subframe also had a model number on it! well the r dose its says 7RL on mine this might help. But in the quest to get a mint bike like you ive changed alot of bits on mine. also look here it may help http://workshop.nsr-world.com/ it has frame number ranges.
And it is possiable that your bike had the clutch changed, there was an SE on ebay a week or so ago that the guy changed the Dry clutch for a wet one, or so he said, And the SE i have will be up for sale as an R with se/sp suspension once ive finished it!