One of the biggest problems using these old things is they are frame mount - you'll have to build your own mount if you can't find one -
. The mounts used to cost big bucks.
Look for something lighter and more easily mounted. These were a good idea at the time (?) but have no real place in the "here and now" (IMHO), even on a classic bike.
I've had lighter and more easily mounted windshields on my California II, and they were awful. Yes, you need the hardware to mount it to the frame, but once you have that, the frame mount is one of the Windjammer's virtues - no feedback to the steering. I don't notice the weight. Might be different if you have one on a small motorcycle, but a California II is already fairly heavy. I've read this "heavy" thing enough times that I wonder if they aren't all the same weight (mine is a Windjammer III), or there are jugs of motor oil stored in the pockets or something.
Looking around at the touring models offered by various motorcycle manufacturers, I see nothing but frame mounted fairings, that look they were designed by teenage boys with dyed orange hair. If your motorcycle is otherwise suited to that use, and you want the wind protection, it's your choice - '60s windshield like an Eldo cop bike, or vastly superior '70s Windjammer, designed by Vetter, using a wind tunnel, to be ideal for motorcycle touring. (Or you could get a copy of one.)
Esthetically, my motorcycle looks distinctly better with the Windjammer, it repeats the slight upsweep curve from the seat and tank, balances the slightly weird handlebars. It sure doesn't look at all like a hamster getting its head crushed.