So I just bought my first bike, a 1998 Yamaha V Star 650. This is where I get a little confused though, it has some mods done to it and I really don't know what they are, lol. I know the seller told me it was lowered, has a "Bobber Kit" and a Hyper Charger, and he changed the exhaust and all the lighting. What exactly is a Bobber Kit, and what does the Hyper Charger do? Also, I would like to add a passenger seat eventually to this bike, if possible, and how would I go about that? Any suggestions would be greatly appreciated. Thanks!