No. The Sportster has had four cams since it's birth, nothing new about that. Flatheads had the same configuration way back when. Buell used to use the Sportster engine, but they are done. Perhaps Harley makes a trike with a Sportster engine, but I do not know for sure.
I am 6'4" and almost 300lbs and I feel cramped on the Sportster frame, even with mini-ape handlebars and extended foot controls. I prefer the 1200 engine vs. the Twin-Cam models and was wondering if it could be ordered, or even fit, a Soft tail model. Thanks.