here is an XLT/Edge valance on a stock 2wd bumper
Notice the ends near the wheel well dont flare up. Its been cut to fit the stock bumper.
Now on the stock 4x4 XLT/ Edge bumper/valance if you bought both to fit.
Notice the flare up by the fenders. Thats how it is stock, and like said above, there are tabs on that part to attach into the bumper