Yeah, you
can improve the front, but unless you're bored there's no real reason to mess with the headlights. Work out your grille block and air dam first, cover the rear wheels, put wheel covers on the fronts and then start on a kammback. Since it has barn doors on the rear, mounting shouldn't be a huge issue.
You're going to see the greatest gains at the back, but from experience, it is the most difficult mod to do.
Check out this for ideas...