250-500cc Oversize tank options for WR300

They're B&B Offroad frameguards. I've attached a link.

http://www.bboffroad.com.au

The shroud graphics are from Ringmaster Images here in Australia. They've got the biggest range of Husky graphics that I've been able to find. Mine are the 2009 Striker design. Ringmaster have a pretty cool website where you can check out the look of the graphic kits on a bike. You can also buy part kits - I just got the shroud and fork protector bits as I didn't want all the other stuff. Link attached.

http://www.ringmasterimages.com.au/

The tank on my 07 WR-250 is the 3.4 gallon. The black plastic shrouds that bolt to the radiators are shaped different on the 09 compared to my 07. From the pictures it looks like the shape of the 09 shrouds would make it a little harder to mount the tank. On my 07, the tank went right on with no issues.

Sweet!
Now if only some one will set up a wholesale account and be the Official US supplier.

Now back on topic:
Stock tank is 2.5 gallons right?

I believe that it is. We talk in litres over here - it's about 9.5 litres.