Has anyone here ever tried mounting the 3.9 gl Acerbis underseat tank on the wr450? They are originally made for the xr650 and am wondering how complicated it would be to mount on on the wr. The next question is if anyone knows of a 6 gl tank for the wr450? I am looking for about 10 gls of capacity. I need mad range and am hoping that something can be modified to work with the wr450. What kind of race mileage are you guys getting out there with the 3 gl tank? Any input is much appreciated.