body kit bumper help

im going to buy the saleen style kit for the mustang from (link Below) but the main concern is it looks like it attaches to the bumpers front and back and which my back bumper is damages on the left side because someone hit me. if i buy this kit will it come with the bumper or does it just attach who has added this kit before whats your info on this?

http://www.designconceptsauto.com/groundeffects.html

ok i was just about to place an order thanks for the info since i know it has to be the front bumper and the back ill go and buy it its just by the looks of it it looks a little small doesnt it. np with the link it took me a wile to find it so cheap