I called IMS yesterday to order a new tank for my WR450. The good news is that they made the YZF450 tank and the WR450 tanks the same. Apparently the bikes are similar enough that all they had to do was to put two different seat post locations on the back of the tank. One for the YZF450 and one for the WR450. You don't have to buy a YZF seat to run a desert tank now, at least an IMS tank. They also redesigned the tanks for the 03 YZF and WR450's to be narrower and have a lower center of gravity, kind of like the Ty Davis signature IMS tank. I really like that. They told me the tank won't be any wider than the stock tank. Here's the kicker, and it just doesn't sound right to me. IMS told me that I do have to buy YZF shrouds because the WR450 and the YZF450 have different size shrouds. They are the same shape and they look the same side by side, but they are about an inch different in size. Does this sound right to you guys? I called N-Style about graphics and they say that there are two different graphic kits for the WR450 and the YZF450, but it's the tank part that is different not the shroud. The tank and graphics are on backorder, so it may be a while before I can start bolting things up and comparing. So I guess the WR450 waiting continues. I finally got the bike and now I have to wait on parts. If any one has a way to compare the two shrouds and see what the difference is please let me know. I hate to spend more money than I have to. My local shop doesn't have anything in stock that I could hold up and compare. I thought the WR was wider and that was it, maybe I'm wrong.