If anyone is thinking about a larger gas tank, particularly a 6.6 gal one for a 2004-2006, e-bay has a good deal on one. I just bought one. It comes with a mounting kit including petcocks, for $179 including shipping. The only problem I've found is that it won't fit with my Flatland Racing radiator guards, but then if I need the guards with this tank, I've got bigger problems than just a bent radiator. It certainly is bigger but only by a couple of inches on each side. I don't do any racing, just trails, some singletrack, day rides, dual-sport rides, so size and weight is not a big concern to me. Here are a few pictures.