I've been wanting a 250cc cruiser to make my commute a bit cheaper petrolwise and a bit more comfortable. I've got my eye on a 250 Dragstar. Since it's going to be spending a lot of time on the motorway, I'd like to change the gearing to suit. I've done a bit of research and from what I can tell it looks like its predecessor, the XV 250 Virago, was pretty easy to mod but the Dragstar (crap name btw, makes it sound like a bloke in a dress) has a funny sized chain which reduces your options for sprockets.
Is it possible to chuck the 428 chain and get, say, a 520 chain and then replace the sprockets with something like 17T front, 43T rear? How much work would be involved? I don't know a lot about gearing I'm afraid.