Seen here at the Baltimore Bike Show in 2000. Great licence plate.
The SS model (Street Scrambler) was made from 3/71, serial #145234 to 10/71, serial # 150723. Of course, there will have been a lot of Fastbacks, Roadsters etc. in that 5489 bikes which makes it a pretty rare beast. Main features of this model are the twin high-level exhausts, reverse cone silencers, braced bars, undershield, and a raised "dirt-bike-like" front fender, and a p-11 tank (boy does it NOT hold enough gas!!!)