The new spoilers should come with the attching bolts... drilled holes will be required into the front valence. Its important to be aware that there is a left/right. I've had mine installed so that the sharper angle of the spoiler is outside (near the turn signal light), and the center gap between them is definitely apart.. not touching each other, perhaps by about 1.5-2 inches.
The cool thing about these front split spoiler is that a floor jack can typically be rolled underneath to lift the car at the K-frame (maybe a slight bumper hand lift might be needed for a 1/2 inch or so pending the size of the jack), then... the jack handle will fit between the spoiler's split center opening... conveniant!
I'm planning to incorporate brake cooling ducts into a set of these spoilers (using Rigid or Craftsman shop-vac floor ends.. either 1-7/8" tube which fits perfectly, or else the 2.5" tube will need some modifications); possibly, may also get 2-sets of spoilers and make them wider towards the fenders (heat gun to re-shape around the turn signal).
I like front decals on the spoilers.. MOPAR, DODGE, tire brands, etc. (been required for some clubs that I autocross/race in).
T/Ake care! Good luck! An excellent gift!!! ... a lucky man!