Another US model. Cool. You may get spoiled by the quicker handling with the forks. It's very easy to lean till the valve covers scrape. I don't recommend it though because valve covers are not cheap. And just so you know, you'll have to let the air out of the rear tire to remove the wheel. The 4 x 18 tire is a little too wide to clear the brake shoes when inflated.
If you need to do fork work, let me know. I have some tricks and tips.
"There’s probably no better way to go from New York to San Francisco on a motorcycle than on an R90S."
, January 1977 and Mike last night