If your truck has a chrome bumper you need just about everything to make this work. You will need the sport steel bumper, Side Caps, and whatever pieces they didn't include with the cover when you bought it. To install the cover you'll need the upper step pad, closeout where the tow hooks to, push pins to mount the close out, lower air dam, and whatever bolts and nuts you are short from converting yours. The license bracket is also differnet if your state requires one.
Its around 300.00 just for the steel beam and endcaps to install the cover.