Once it's running and all tricked out, it's still going to be a Sportster. There are a bunch of other crotch rockets that will outperform it, and real Harley riders want a full grown Hog. Back in the dark ages, the 61 cubic inch bike was the granddaddy of the Sportster, and those weren't terribly popular, either.
Jerry

Ignorance can be fixed. Stupid is forever!