I was just 26 when I bought my first R90/6, and it was just 10 years old at the time. I rode it for years, and thoroughly enjoyed every mile. The bike was reliable and seemed capable of everything I needed it to do, and I still own it today. It's currently in the process of getting rebuilt into a special purpose beater, but that's a whole 'nuther story . . .
I've ridden many other diverse bikes over the years, but the old airheads are still my passion and my machine of choice. My primary bike is my R90S, and it still does everything I want in a bike. I still get a buzz when I look at it, and I still get a kick out of the quality of its design, engineering standards and functionality.
As for the Luftmeister fairing, might i suggest considering an "S" fairing (as fitted to the R90S, R100S and R100CS) as an alternative? Not too invasive or heavy, looks good, and takes the wind off your chest. Just a thought . . .
'76 R90S silver smoke
'75 R90/6 hybrid
"Don't worry, it's not loaded."
last words of Chicago's Terry Kath before shooting himself in 1978