Wildcats built on the west coast were different from those built in Indiana. Even so, in 2008 the tank capacities changed along with the front cap design mid-year. I owned an early model 2008 RKBS and it had the smaller tank capacities. If your front cap looks like this you probably have the smaller tank capacities.
You can find where your Wildcat was made by looking at the Manufacturers Label that is located on the driverís side just under the water connection. It will tell you where and what date your trailer was manufactured. Hereís a picture with a red arrow pointing to where that label is.