What can I expect that will be different from the 07 WR250 I'm now on? Are the chassis identical? How much more weight will I be dealing with? My WR250 has all the free mods, a JD carb kit, and the GYT end cap, as well as a larger, 14T CS sprocket. I'm doing some dual sporting, and the 250 will run the roads with the bigger bikes, I just have to wind her up more. Throw in some tight turns and in the single lanes the HP issue is nonexistent. Thanks.