Hi there. If it's going to be a legal competitive motocross and dirt tracker, it has to be a 450cc single. So, I'm pretty sure that's what it will be. Buell has shown it can come up with good suspension. And that's what's needed to be win. Almost all the top dirtbikes, make within a couple of horsepower of each other. The big differences are in how they handle. If Buell can knock off a couple hundred pounds off a Sportster, I'll bet they can come up with some ideas, to make a light dirt bike.